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How to Do Sit-Ups Safely and Alternatives to Try, According to Experts

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How to Do Sit-Ups Safely and Alternatives to Try, According to Experts

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they’re not always the most effective or safest option for everyone. Proper form and technique are key to maximizing the benefits of sit-ups while avoiding strain on the back and neck.

To provide a well-rounded perspective on how to do sit-ups, we spoke with three experts who shared their insights on the benefits and potential risks of sit-ups, as well as alternative exercises that can help build a strong core without the same level of stress on the body. Their advice offers a balanced view of how to approach core training, ensuring safety, effectiveness, and overall fitness progress. Whether you’re a beginner or a seasoned athlete, understanding how to incorporate sit-ups — or how to replace them with other movements — can help you reach your fitness goals more efficiently and safely.

Many expectant mothers, especially, wonder if sit-ups are safe during pregnancy and whether they should incorporate them into their fitness routines. To provide expert guidance, we spoke with a specialist who will weigh in on the safety and recommendations for core exercises during pregnancy.

Experts Featured in This Article:

Leia Rispoli, MD, is a double board-certified interventional pain management specialist and physiatrist at DISC Sports & Spine Center.

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Anna Larson, PT, DPT, is a doctor of physical therapy at Fusion Wellness and Femina Physical Therapy in Los Angeles, CA.

Meleen Chuang, MD, is a clinical associate professor for the Department of Obstetrics and Gynecology at NYU Grossman School of Medicine, chief of Obstetrics and Gynecology at NYU Langone Hospital Brooklyn, and medical director of Women’s Health, Family Health Centers at NYU Langone (FHC).

Todd Sinett, DC, is the CEO of Tru Whole Care and founder of Backbridge, a back pain device. Dr. Sinett has published four books on treating back pain, available on Amazon.

Sit-Ups: Muscles Worked and Benefits

Most people might assume crunches and sit-ups are the same exact exercise. However, there are a few key differences to note for each movement, particularly when it comes to the muscles involved. “While the terms ‘crunches’ and ‘sit-ups’ are sometimes used interchangeably, sit-ups are usually hinged from the waist, and crunches can be more of a curling of a spine, but it really depends on who you talk to and how people use these terms,” Leia Rispoli, MD, says. “Classically, a crunch is more of a curled movement from a flat position where your elbows meet your knees vs. a sit-up, which is a hinge from the waist with a persistent stable and flat spine.”

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When it comes to performing sit-up exercises, the main muscles used are the rectus abdominis, obliques, transverse abdominis, and hip flexors. “The specific muscles that are worked and utilized involve your core muscles (mostly your anterior core muscles), so all your abdominal muscles, and hip flexor muscles,” Dr. Rispoli says.

A sit-up exercise “involves your abdominals and hip flexors as well because it combines spinal flexion and hip flexion,” Anna Larson, PT, DPT, says. “While crunches involve mostly your abdominal muscles, because the motion is achieved only with spinal flexion.”

There are benefits of sit-ups that relate to movements in everyday life. “A lot of core muscle strength and stability helps protect and preserve the spine,” Dr. Rispoli says. “In general, this helps establish a persistent habit of good posture, which ultimately puts the spine in a protective mode against years of degeneration.”

“Our abdominal muscles form a large part of our core, which give us stability, balance, and improved posture,” Dr. Larson adds. “Strengthening your abdominal muscles also will increase your pelvic floor strength. Improved pelvic floor strength will help to decrease the risk of urinary incontinence and prolapse.”

How to Do Sit-Ups Safely

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  • Start by lying on the floor, with your back against the ground, knees bent and feet flat on the floor.
  • Place both arms crossed at the front of the chest.
  • Bring your upper body and torso up towards your knees.
  • Slowly lower yourself back down to the floor, with control.

Some might want to start out with both hands behind your neck, but for safety, try to keep the arms crossed at the chest first, especially if you’re a beginner. “You want to keep your lumbar spine and your neck and your head all in one plane,” Dr. Rispoli advises. “You don’t want to put any extra flexion or strain on the neck, and you don’t want to use your arms that are positioned behind your head to hinge your neck in a flexion position and pull from there.” She adds: “If the initial engagement of the muscles is too difficult to get off of the floor immediately for those first few degrees, then you should use some sort of propped mat to help eliminate those first few degrees of difficulty.”

Note for beginners: “When starting out with this exercise, it is helpful to have someone stabilize your feet or place your feet under something sturdy such as a couch,” according to Dr. Larson. “Placing a small ball or a couple of pillows behind the back can help to engage the deeper abdominal muscles and help increase your strength gradually over time.”

“The best starting position is with a pillow behind the back or small ball, as this will help encourage spinal flexion, and the engagement of the abdominals instead of overrecruiting the hip flexors. This also decreases the load to the neck as the angle takes some of the strain from the neck muscles and focuses more on the abdominals,” Dr. Larson adds.

Sit-Up Alternatives

Todd Sinett, DC, believes you can do much more than sit-ups to help your core. “I wrote a book entitled ‘Sit-Ups Are Stupid and Crunches Are Crap,’ which provides an outline of exercises and stretches that help to strengthen our core,” he says. “To name a few I love: dead bugs, bird dog, leg raises, planks. You want to focus on exercises that elongate the body and spine.”

Dead bugs: “Anything laying on your back while alternating moving your legs or arms, such as a dead bug, is a great way to build deep core strength,” Dr. Larson says.

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Bird dogs: “Another way to challenge core stability is on hands and knees alternating reaching your opposite arm and leg, also called a bird dog.” Dr. Larson adds.

Leg raises or planks: For pre- or post-natal women, “pelvic tilts, modified planks, leg raises, side-lying exercises can help strengthen core while also ensuring safety during pregnancy. Light aerobic exercises, weightlifting, moderate brisk walking, and cycling on a stationary bike are good options,” Meleen Chuang, MD, says.

Pelvic tilts: “An alternative exercise can be something like a pelvic tilt, where you’re in a sit-up position, but instead of raising your upper trunk, you’re just flattening your back to the floor and contracting and engaging your core and abdominal muscles,” Dr. Rispoli, MD, says.

Jade Esmeralda (she/her), MS, CSCS, is a health and fitness staff writer and a strength and conditioning specialist. A lifelong martial artist and dancer, Jade has a strong passion for strength and conditioning, sports science, and human performance. She graduated with a Master of Science degree in exercise science and strength and conditioning from George Washington University.

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How to avoid exercise burnout and still build muscle, according to an expert

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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.

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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.

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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. 

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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.

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Skip the 10,000 Steps: The One Exercise That Matches a Full Day of Walking, according to a Fitness Coach

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Skip the 10,000 Steps: The One Exercise That Matches a Full Day of Walking, according to a Fitness Coach

On Instagram, Zarina Manaenkova advised taking short intervals of squats could deliver the same impact as a full day of walking. “Ten squats instead of 10 thousand steps,” Zarina’s post read, referencing a study that equated ten squats every 45 minutes with 10,000 steps. Manaenkova explained the science behind her claim, stating, “When your muscles actively contract, they produce very important compounds that influence your brain, metabolism, and even your fat-burning processes. Meanwhile, a simple walk does not have this effect. So, if you want to stay young, squat.”

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