Fitness
Boost heart and lung health with just 2 quick exercise bursts a day, experts say
Why are short bursts of exercise so effective?
Getting enough exercise is a challenge for many adults, particularly as life gets busier. Yet staying active remains one of the best ways to protect your heart, lungs, and overall well-being. According to a new review published in the British Journal of Sports Medicine, short bouts of physical activity, called “exercise snacks”, may hold the key to improving fitness without the time burden of traditional workouts, as per a report by MNT.
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Regular exercise has long been linked to lower risks of heart disease, diabetes, obesity, and even depression. However, the Centers for Disease Control and Prevention (CDC) recommends 150 minutes of moderate activity or 75 minutes of intense activity weekly, a target that nearly one-third of adults fail to meet. The new research suggests that smaller, more frequent bouts of exercise can still deliver measurable benefits for those struggling to fit workouts into their routines, as per a report by MNT.
Miguel Ángel Rodríguez, a doctoral researcher at the University of Oviedo in Spain, explained why this approach works, “When people are asked why they don’t exercise, the most common answers are lack of time and lack of motivation. Exercise snacks directly address both: They’re short, flexible, and easy to fit into daily routines.”
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What did the study find?
The review analyzed data from 11 studies conducted across Canada, Australia, China, and the United Kingdom. A total of 414 participants, aged between 18 and 75, took part, most of whom were sedentary or physically inactive before the research began.
Participants performed short bursts of exercise between two and ten times a day, for up to five minutes each. Activities ranged from stair climbing and leg-focused strength movements to tai chi, a low-impact martial art known to enhance balance and flexibility.
The studies lasted between four and twelve weeks, with participants exercising on three to seven days a week. Impressively, 83% of participants stuck with the program, far higher than the 63% adherence rate typically seen with high-intensity interval training (HIIT), as per a report by MNT.
Cheng-Han Chen, MD, a board-certified interventional cardiologist and medical director at MemorialCare Saddleback Medical Center, explained the findings:
“This review analyzed multiple previous studies and found that brief (less than 5 minutes) periods of moderate-to-intense exercise at least twice a day was associated with improved cardiorespiratory fitness. These findings provide a potential avenue for sedentary people to obtain a health benefit with only short amounts of physical activity,” as per a report by MNT.
What types of exercise work best?
The studies explored a range of movements to suit different fitness levels. Younger participants performed more intense activities such as stair sprints, lunges, and push-ups. Older adults or those with lower fitness levels benefitted from lighter routines like chair stands, resistance exercises, or short sessions of tai chi, as per a report by MNT.
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Rodríguez emphasized that consistency and personalization matter most, “It is important to recognize that exercise should ideally be individualized to maximize its benefits. The response to training can differ substantially between adults and older adults, due to variations in physiological capacity, recovery rate, and baseline fitness.”
He added that, “balancing intensity, safety, and consistency is essential when implementing exercise snacks in everyday life.”
Can short workouts really improve heart and lung fitness?
Yes, the research showed statistically significant improvements in cardiorespiratory fitness, even though participants didn’t meet the full weekly exercise recommendations set by the CDC or World Health Organization (WHO), as per a report by MNT.
Younger adults showed the biggest boosts in heart and lung function, while older adults saw improvements in muscular endurance. Rodríguez noted:
“What’s remarkable is that these gains were achieved with exercise volumes far below current WHO recommendations. This suggests that small, consistent bouts of movement can meaningfully improve fitness, even in people who find it hard to dedicate long periods to exercise.”
The study also observed positive changes in muscle strength, balance, and endurance, though the researchers cautioned that more comparisons with traditional, longer workouts are needed to confirm equivalence.
Is any movement better than none?
Both Rodríguez and Chen agree that consistency, not duration, is the true key to long-term health, as per a report by MNT.
Rodríguez advised, “The main message is that exercise does not need to be long, structured, or complicated to be effective. Short, repeated bouts of activity (i.e., ‘exercise snacks’) can significantly improve fitness with very little time commitment.”
He continued, “any opportunity throughout the day to move, even briefly, can make a meaningful contribution. Incorporating short, vigorous snacks of activity whenever possible remains a highly valuable and accessible strategy for improving overall health and cardiorespiratory fitness,” as per a report by MNT.
Chen added that this flexible style of movement could be ideal for those who struggle to carve out time, “This form of exercise might be an efficient way for busy and/or sedentary individuals to get at least some cardiopulmonary benefit with only brief periods of higher-intensity physical activity.”
How can you add exercise snacks to your day?
For people who are short on time, Rodríguez suggested weaving short activities into daily routines, “For healthy adults, practical examples include fast stair climbing, bodyweight squats, lunges, push-ups, or even burpees, provided that their physical condition allows these higher-intensity movements.”
For older adults, or those new to exercise, gentler options like chair stands, light resistance training, and tai chi can be highly effective. The goal isn’t to exhaust yourself, it’s to move more frequently and consistently throughout the day, as per a report by MNT.
The research makes one thing clear: fitness doesn’t always require long, structured workouts. Even two or three bursts of movement a day, lasting less than five minutes each, can improve heart and lung health, increase strength, and boost endurance.
In Rodríguez’s words, the message is simple, “Any opportunity throughout the day to move, even briefly, can make a meaningful contribution.”
So, whether it’s climbing stairs, doing squats in between calls, or taking brisk walks during lunch, those small moments of movement could make a big difference for your long-term health.
Note:
This article is for informational purposes only and not a substitute for professional medical advice. Always consult your doctor regarding any medical concerns.
FAQs
What are exercise snacks?
They are short, high-intensity bursts of physical activity lasting about five minutes, done multiple times a day.
How do exercise snacks improve health?
Even brief activity boosts heart and lung function, improves endurance, and helps maintain overall fitness, especially in people with busy schedules.
Fitness
The Case for Ditching Your Fitness Trackers
Credit: René Ramos/Lifehacker/ZaZa studio/Adobe Stock/Andriy Onufriyenko/Moment/Vadym Kalitnyk/iStock/Getty Images
I have a love-hate relationship with the smartwatch on my wrist. This relationship is no doubt shaped by the fact that I write about fitness tech for a living, but I know I’m not alone in succumbing to an obsession with numbers from my wearables. Did I hit 10,000 steps? What’s my resting heart rate today? Is my sleep score better than yesterday’s? When did progressive overload turn into screen time overload, too?
The fitness tech boom is showing no signs of slowing down any time soon—and with it, we consume a constant stream of promises that this data will make us healthier, stronger, and faster. With the sheer amount of health insights potentially available to us at any time, it’s easy to get overwhelmed. I’ve watched my least health-anxious friends become consumed by metrics they’d never heard of two years ago. They’re tracking bone density trends, obsessing over cortisol levels, panicking about stress scores that fluctuate for reasons no algorithm can fully explain. I can feel my fitness trackers pull me away from genuine wellness and into a mental health disaster. The good news: When I look up from my screens and start talking to real people, I see I’m not alone in wanting to unplug and push back against the overly quantified self.
A growing anti-tech fitness movement
When I put out a call on Instagram asking people about their relationship with posting workout data and fitness content, I received hundreds of responses from people exhausted by the performance of fitness. Even if your only audience is your own reflection, simply owning a wearable can create a real barrier between feeling good about your body and your fitness journey. Did I work out enough today? Will my friends see that I skipped a workout? Should I push through injury to maintain my streak?
For these reasons, celebrity trainer Lauren Kleban says she doesn’t like to rely on wearables at all. “Counting steps or calories can quickly spiral into a bit of an obsession,” says Kleban, and that “takes the joy out of movement and away from learning what’s truly best for us.” She says her clients want to focus on their mind and body connection, now more than ever. There’s a real, growing desire to rebuild a sense of intuition that doesn’t depend on feedback from a watch.
Similarly, Marshall Weber, a certified personal trainer and owner of Jack City Fitness, says that he’s “definitely been surprised by the growing push towards unplugged fitness,” but that he “totally gets it.” Weber says he’s had clients express feeling “overwhelmed with their Fitbit or Apple Watch micromanaging their training.” When every workout becomes about numbers and keeping up with an average, it’s all too easy to lose touch with your body. “The anti-tech movement is about taking back that personal connection,” Weber says. After all, when was the last time you finished a workout and didn’t immediately look at your stats, but instead just noticed how you felt?
This is the paradox at the heart of fitness technology. Tools designed to help us understand our bodies have created a new kind of illiteracy. Maybe you can tell me why you’re aiming for Zone 2 workouts, but can’t actually recognize what that effort feels like without a screen telling you. In a sense, you might be outsourcing your own intuition to algorithms.
If nothing else, the data risks are real. (Because if you think you own all your health data, think again.) Every heart rate spike, every missed workout, every late-night stress indicator gets recorded, stored, and potentially shared. Still, for me, the more insidious risk is psychological: the erosion of our ability to know ourselves without consulting a device first.
What do you think so far?
How to unplug and exercise intuitively
So what does unplugged fitness actually look like in practice? It’s not about rejecting all technology or pretending GPS watches and heart rate monitors don’t have value—I promise. Look, I crave data and answers as much as—and maybe more than—the average gym-goer. I’m simply not woo-woo enough to ditch my Garmin altogether.
Instead, I argue for re-establishing a hierarchy in which technology serves your training, not the other way around. “Sometimes, the best performance boost is just learning to listen to what your body is saying and feeling,” says Weber. But what does “listening to your body” actually look like?
If you’re like me, and need to rebuild a connection with your body from the ground-up, try these approaches:
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Start with tech-free workouts. Designate certain runs, yoga sessions, or strength workouts as completely unplugged. No watch, no phone, no tracking. Notice what changes when there’s no device to check.
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Relearn your body’s signals. Can you gauge your effort level without looking at a heart rate monitor? Do you actually know what “recovery pace” feels like for you, or are you just matching a number? Practice assessing fatigue, energy, soreness, and readiness without checking your watch.
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Replace metrics with sensory awareness. Instead of tracking pace, notice your breathing pattern. Instead of counting calories burned, pay attention to how your muscles feel. Instead of obsessing over sleep scores, ask yourself a simple question in the morning: how do I actually feel?
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Set goals that can’t be gamified. Rather than chasing step counts or streak days, aim for qualitative improvements. Can you hold a plank with better form? Does that hill feel easier than last month? Are you enjoying your workouts more? These are the markers of real progress.
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Create tech boundaries. Maybe you use your GPS watch for long runs but leave it home for everything else. Perhaps you track workouts but delete the social features. Find the minimum effective dose of technology that serves your goals without dominating your headspace.
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Reconnect with in-person community. The loss of shared gym culture—people actually talking to each other instead of staying plugged into individual screens—represents more than just nostalgia. There’s real value in working out alongside others, in having conversations about training instead of just comparing data, in building knowledge through shared experience rather than algorithm-driven insights.
The bottom line
Unplugging is easier said than done, but you don’t need to go cold turkey. Maybe in the new year, you can set “body literacy” as a worthwhile resolution. At the end of the day, exercise should add to your life, not become another source of performance anxiety. It should be energizing, not exhausting—and I don’t just mean physically. The never-ending irony of modern fitness culture is that in our pursuit of optimal health, we keep inventing new forms of stress and anxiety. When all forms of wellness come with trackable metrics and social pressure, I think we’ve fundamentally missed the point.
Fitness
How to avoid exercise burnout and still build muscle, according to an expert
Many of us have experienced the overwhelming feeling of mental and physical exhaustion that comes with exercise burnout. When you push yourself too hard without sufficient rest and recovery, it ultimately becomes counterproductive to your fitness goals, and your energy will tank along with your motivation. Not only that, your performance will suffer when you overtrain and under-recover, and you’re left sinking further into the couch, wondering how you’ll lift that next weight, swim that next lap, or run that next mile.
With a combo of the right nutrition, rest, recovery, and lowering your training intensity, you can get back on track. To learn more about avoiding burnout and torching fat while sculpting muscle for men, I asked certified personal trainer and Vice President of Education for Body Fit Training, Steve Stonehouse, to share some of his vast knowledge on the subject. With decades of experience in fitness education, fitness programming, and personal training, Steve Stonehouse developed an in-depth knowledge of weight loss, improving body fat composition, building muscle, and the best exercise plans that generate serious results.
Expert advice on burning fat
The Manual: As the Vice President of Education for Body Fit Training, what are your top tips for burning fat and improving body composition for men?
Steve Stonehouse: As the programmer and head of education, this is a little cliché, but I go for balance. Not every workout can be this CrossFit type, give it all you’ve got, smoke yourself, and work out — that’s not sustainable. The other end of the spectrum is just walking at a moderate pace for 20 minutes on a treadmill three times a week, because that’s not going to do it either. There’s value in both of those scenarios.
It’s best to have a session or two each week where the intensity is very high, and you’re testing yourself and pushing yourself closer to your limits. That’s anaerobic exercise, which is 90% intensity or above. It’s fine, safe, and healthy to get there occasionally, but every workout can’t be one of those. Your body isn’t built to train that way; you’re gonna burn out, and you could get injured, or both.
There’s a place for some moderate intensity as well, so if I were focusing on heart rate, I would say in the 80s, so it’s hard but not max effort, and it’s more sustainable. When you’re in that 70 to high 80s range, we categorize that as building aerobic capacity. Overall, I suggest an approach with recovery, moderate intensity, and then high intensity every now and again to test yourself.
The best cardio for fat loss
TM: How does cardio help with fat loss, and what types of cardio do you recommend?
Steve Stonehouse: I’m a big fan of high-intensity cardio. Sometimes, people think if some is good, more is probably better, but more isn’t always better. If I were putting a program together for six days a week, I’d have three days as some type of cardio-driven day, and three of those days I would have some version of resistance training. Maybe some days are heavier, and other days are a little lighter with higher rep targets and less rest.
Of those three cardio days, I’d recommend that one of them be a high-intensity max effort type HIIT session. Another could be hard with a heart rate in the 80s, but not max effort. That third cardio day could be more metabolic conditioning, like kettlebell swings, sled pushes, rower, or SkiErg, and things like that.
Ramping up muscle growth
TM: What types of exercise are the most effective for ramping up muscle growth?
Steve Stonehouse: We’re moving into a great space right now in fitness, and it seems like every 10 or 15 years, there’s this new movement. CrossFit first popped up and led the charge for metabolic conditioning and no days off. It’s the idea that if you still feel good at the end of a workout, you didn’t train hard enough. I think we’re phasing out of that and into wanting to lift heavy again. People who wouldn’t have touched a barbell ten years ago are lifting heavy now.
Keep in mind that heavy is a relative term. You can get stronger with some lighter dumbbells, but there are limits to that. A blend is nice, but you do need to include those times when you’re lifting heavy and challenging yourself at a low rep target.
Say, I’m going to do barbell deadlifts for five reps. If I can do eight, then that weight is too light. It’s intended to be a weight that you can’t get 15 reps of. There are advantages to lifting heavy with low-rep targets and longer rest times. For example, we’re going to do four sets of five reps of barbell deadlifts with two minutes of rest in between sets. If you can do more than five or six reps, that weight is too light. There’s a lot of value in lifting heavy.
TM: We know it’s probably difficult to choose, but what are your top three favorite fat-burning, muscle-building exercises right now?
Steve Stonehouse:
- Barbell Zercher squat
- Barbell deadlift
- Flat barbell bench press
TM: How often should you work out to build muscle?
Steve Stonehouse: For the heavy session with five or six reps and longer rest periods, you could have a day each week that’s primarily focused on upper-body heavy strength training. Then, you could split it up and have another day that’s primarily focused on the lower body. You could do that, so you’re not in the gym for two hours; it’s more like a reasonable 45 or 50 minutes. If you were feeling ambitious, you could get a third one in toward the end of the week and have a bit of a mixed session where there’s not as much volume, but you have upper-body and lower-body focus.
With that type of heavy volume, you’re going to need a decent amount of time to rest. So, if I were doing a heavy bench press today, I probably wouldn’t do that again until next week — same thing with squats, deadlifts, or any larger main lifts.
Incorporating sufficient rest days and progressive overload
TM: Are rest days important for the best results?
Steve Stonehouse: Yes. Rest and recovery are two different things. A recovery session would include a bit of activity, but at a lower intensity. Recovery is restoring to a natural, healthy state, and rest is inactivity.
TM: With resistance training, do you recommend incorporating progressive overload, where you gradually increase the weights over time to develop muscle strength and mass?Steve Stonehouse: 100%. We do strength training regularly at BFT. We have a portion of our performance app, and you can enter your five-rep max. On different days, the performance app tells you how much weight you should be lifting on that day to appropriately follow that progressive overload model.
Fitness
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