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How many minutes of weekly aerobic exercise is needed for weight loss? New study

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How many minutes of weekly aerobic exercise is needed for weight loss? New study

Previous research shows that weekly aerobic exercise can help you lose weight. Does more weekly aerobic exercise result in more weight loss? How much cardio do we need to power through to really drop those pounds? I always figured that sweating more frequently for longer durations amplified weight loss. Recently, researchers reviewed 116 clinical trials to reveal how much aerobic exercise resulted in more significant reductions in body weight, body fat, and waist size. Let’s delve into the new research.

The study

Pavel Danilyuk / StockSnap

In a recent review published in Jama Network Open, researchers wanted to explore how physical exercise affected weight loss, waist size, and body fat. The clinical trials included in the review reported data for 6,880 overweight or obese adults with a body mass index or BMI over 25. The review studies involved clinical trials with durations of at least eight weeks.

The results

Man standing on a body fat scale.
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Researchers reported clinically significant improvements in participants who performed moderate to vigorous aerobic exercise for at least 150 minutes weekly. 

For each 30-minute weekly increment of aerobic exercise, researchers saw an associated reduction of:

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  • -0.52 kg in mean body weight
  • -0.56 cm reduction in mean waist circumference
  • -0.37% associated reduction of body fat percentage

An exercise duration of 150 minutes every week was strongly linked to clinically significant reductions of -2.79 kg in body weight, -3.26 cm in waist circumference, and -2.08% in body fat percentage.

What about 300 minutes per week?

Man jogging outside by water and a palm tree
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300 minutes per week is five hours. The researchers reported even greater reductions when participants performed aerobic exercise for 300 minutes every week, with a -4.19 kg drop in body weight, a -4.12 cm reduction in waist circumference, and a -1.78% drop in body fat.

The takeaway

Man squatting down doing jump squats at home workout
Mart Production / Pexels

We can take away from this research that 150 minutes of moderate-intensity or greater aerobic exercise per week might be necessary if you want to see more meaningful weight loss. Exercising for 300 minutes every week yields even better results. This study indicates that exercising for less than the typically recommended guidelines of 150 minutes per week might only result in more minor reductions. In this study, participants who finished shorter exercise durations of less than 30 minutes a day for five days a week only saw minor decreases in waist size, weight, and body fat. Aerobic exercise is a good idea if you’re trying to lose weight, and this study gives us another reason to push through those extra minutes and shed those pounds.






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Doctors Reveal Whether You Really Need To Exercise To Lose Weight

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Doctors Reveal Whether You Really Need To Exercise To Lose Weight

It’s been a hotly debated topic for years: Is focusing on your diet or your workout regimen better when you’re trying to lose weight? While research over time has generally found that dietary changes will have a larger impact on your weight than exercise alone, health experts still stress the importance of exercise in a holistic weight loss program—and here’s why.

On its own, “exercise is not a very effective tool for weight loss,” says Alexandra Sowa, MD, an internal medicine doctor specializing in preventative health, nutrition, and obesity medicine and the author of the forthcoming book The Ozempic Revolution. “But exercise is still important for cardiovascular health, overall longevity, and cognitive health.”

To simplify things, Mir Ali, MD, the medical director of MemorialCare Surgical Weight Loss Center at Orange Coast Medical Center in Fountain Valley, California, says to consider this comparison: A 155-pound adult will burn about 200 calories doing a 30-minute low-impact aerobics class. A tall Starbucks mocha is nearly 300 calories. Based on the math alone, you’d have more impact on your weight loss efforts—and save more time—by simply skipping the mocha.

Research has had similar conclusions. One scientific review concluded that doing consistent moderate-intensity aerobic exercise, like walking for 30 minutes a day, five days a week, likely won’t lead to any significant weight loss in most people without dietary changes. Another older scientific analysis of six studies in the Journal of the Academy of Nutrition and Dietetics found that people who focused on diet and exercise to lose weight didn’t end up dropping more pounds in a six-month period than people who solely altered their diet.

Exercise isn’t completely meaningless when it comes to weight loss, though.

In fact, some data suggest that a combination of dietary changes and exercise is superior to help you drop pounds. “The majority of weight loss involves diet, but exercise plays a role,” says Dr. Ali. “It can help support weight loss, and maintain your metabolism.” But if you don’t tweak your diet first and foremost, you likely won’t see notable results, he notes.

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Also, exercise may make more of a difference in your waistline over the long term. That same study in the Journal of the Academy of Nutrition and Dietetics that found exercisers and dieters lost similar amounts of weight after six months did determine that people who focused on combining diet and physical activity lost more weight over a year than interventions based on diet or physical activity alone.

“Exercise is still important for cardiovascular health, overall longevity, and cognitive health.”

Working out beyond what’s recommended may have an impact, too. One study found that people who burned at least 400 to 500 calories a workout, five or more days a week, experienced weight loss without nutrition interventions. That’s why you may notice that you slim down if you’re, say, training for a half marathon or distance bike race.

Exercise can also help prevent weight gain and support weight maintenance once you reach your goal weight, Dr. Sowa says. That’s why she suggests that her patients “get into the habit of exercise to maintain weight loss and improve long-term health.”

Meet the experts: Mir Ali, MD, is the medical director of MemorialCare Surgical Weight Loss Center at Orange Coast Medical Center in Fountain Valley, California. Michael Snyder, MD, is the director of the Denver Center for Weight Loss and Bariatric Surgery Foundation and a medical advisory team member at FuturHealth. Alexandra Sowa, MD, is an internal medicine doctor specializing in preventative health, nutrition, and obesity medicine and the author of the forthcoming book The Ozempic Revolution.

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Whether strength training is more impactful for weight loss than cardio is still up for debate.

Strength training is generally seen as a wise move because it helps to build muscle mass. The more muscle you have, the harder your body works at rest to burn calories, Dr. Ali explains. It’s also important to focus on increasing muscle mass as you lose weight because your body tends to lose lean muscle mass along with fat. Not only can that mess with your overall strength, it can also lower your metabolism, so you end up not burning as many calories at rest as you did in the past, Dr. Ali adds.

Of course, exercise of any sort still burns calories, and that shouldn’t be minimized. “But exercise can also increase feelings of hunger,” Dr. Ali notes. So, if you’re not being mindful of your diet while working out, you may end up taking in the same amount of calories that you burned during your workout or even more.

When paired with nutrition changes, a workout regimen that prioritizes resistance training and includes some aerobic activity is the sweet spot for weight loss.

Something else to consider: Doctors who prescribe weight loss medications usually recommend that you don’t go overboard with cardio when you’re taking something like Ozempic. Among other things, the medications tend to lower your blood sugar and exercise has a similar impact. Having blood sugar that’s too low raises your risk of uncomfortable symptoms like a rapid heartbeat, shaking, and feeling weak. “If you overdo it with aerobic exercise, it can lower your sugar further,” Dr. Ali says. “However, the point of excessiveness is different for each person.” Meaning, some cardio is probably fine. But training for a marathon while taking Ozempic may be something to discuss and plan for with your physician.

One 2022 scientific review published in the journal Obesity Reviews found that a mix of resistance training and calorie restriction was the most effective at reducing body fat compared to these interventions on their own. However, the researchers also found that a combination of resistance training and aerobic exercise also lead to “significant results.” Worth noting: Resistance training alone was also the most effective for increasing lean mass.

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A 2021 analysis of 12 reviews and 149 studies also found that aerobic exercise and HIIT workouts were effective at weight management, while resistance training helped lower the odds of lean muscle mass loss while people lost weight. “These findings show favorable effects of exercise training on weight loss and body composition changes in adults with overweight or obesity,” the researchers concluded.

How To Lose Weight Effectively—Beyond Your Exercise Routine

Doctors recommend these tips whether you’re losing weight with or without medical intervention (say, with the help of a weight loss medication). Experimenting with all of the tips below can help you achieve noticeable and lasting weight loss results—and complement a workout plan too.

1. Prioritize protein.

Everyone should be eating protein, but Dr. Sowa says it’s “very, very important” when you’re on a weight loss journey. “It’s satiating and fills you up,” she says. Protein also helps to prevent muscle loss as you lose weight—a common issue—and to improve your muscle mass, she says.

Everyone’s protein needs are slightly different, but the bare minimum recommendation is 0.35 grams of protein per pound of body weight every day if you’re not active, according to The Academy of Nutrition and Dietetics. But many doctors say you’ll likely need more, especially if you’re active and strength training. That can put you more at something like 0.73 to 1 grams of protein per pound of body weight (or about 30 to 35 grams of protein per meal), per the National Academy of Sports Medicine.

2. Ramp up your fiber intake.

Fiber has a lot going for it. “Fiber slows digestion, keeps you feeling full, and helps regulate blood sugar levels,” says Michael Snyder, MD, director of the Denver Center for Weight Loss and Bariatric Surgery Foundation and medical advisory team member at FuturHealth. That translates to you feeling fuller, longer after meals and makes it less likely you’ll overeat.

The U.S. Dietary Guidelines for Americans recommend that adult women have 22 to 28 grams of fiber a day, but most Americans aren’t getting that. Consider incorporating fiber-rich foods like fruits, vegetables, whole grains, and legumes into your diet. (Just ramp up your fiber intake slowly, or you’ll end up dealing with uncomfortable bloating and gas.)

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3. Get plenty of quality sleep.

Sleep hasn’t been a huge focus with weight loss in the past, but doctors swear it’s a crucial element. When you don’t get enough sleep, your body craves more energy—and that can cause you to reach for more food, Dr. Sowa says.

Dr. Snyder agrees: “Poor sleep disrupts hunger hormones, leading to overeating.”

Everyone’s sleep needs are slightly different, but it’s generally recommended that adults get seven hours of sleep or more a night.

4. Cut out sugary beverages.

Sugary drinks like sodas and sweet teas are packed with simple carbohydrates and add empty calories to your day, Dr. Ali says. If sugary drinks are a regular part of your life, “your body will use those simple carbohydrates as a fuel source rather than burning fat for fuel,” Dr. Ali explains.

These drinks can also mess with your blood sugar, which can cause you to have energy crashes, making you more prone to overeating, Dr. Snyder says.

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5. Practice mindful eating habits.

It’s practically inevitable that you’ll have to eat in front of your computer at some point or that you’ll want to be entertained during dinner. But doing your best to focus on the food in front of you vs. your Instagram feed, and how your body feels while you’re eating can go a long way toward keeping you from overeating, Dr. Ali says.

Among other things, research has shown that mindful eating can help lower the risk of emotional eating. “If you’re more aware about what you’re taking in, you’re more likely to eat better,” Dr. Ali says.

6. Stay well hydrated.

Don’t sleep on the power of hydration. “Not getting enough fluids will make you feel more tired and rundown,” Dr. Ali says. Having enough fluids can also help you to feel fuller, longer and lower the odds you’ll overeat, he says.

Doctors generally recommend that you aim to have your pee be a pale yellow color—that indicates that you’re well hydrated. But if you want a more definitive guide, the U.S. National Academies of Sciences, Engineering, and Medicine recommends that women aim to have 11.5 cups (2.7 liters) of fluids a day from foods and drinks.

7. Make your stress management plan as foolproof as possible.

Some stress is inevitable in life, but being chronically frazzled isn’t great for your weight loss efforts. “Chronic stress increases stress hormone levels, which can lead to weight gain and dietary de-regulation,” Dr. Snyder says.

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Research shows that stress ramps up the levels of the hunger hormone ghrelin in your body, stimulating your appetite and encouraging you to eat more than you might have if you were feeling more zen.

8. Add in plenty of vegetables at every meal.

Vegetables usually contain plenty of fiber, which is useful for weight loss, as mentioned. But Dr. Sowa notes that they’re also a great way to fill up while getting in plenty of nutrients. “Vegetables are a wonderful low-calorie, high-density food,” she says.

They can also help crowd out less healthy foods from your plate, Dr. Ali says. He just suggests focusing on high-fiber, lower starch vegetables for weight loss.

9. Swap out refined grains for whole grains.

Quick primer: Refined grains have a lot of nutrients removed and include things like white pasta and white bread. Whole grains have plenty of nutrients and include things like whole wheat, oats, and quinoa.

“Whole grains have more fiber, have a lower effect on blood sugar, are more nutrient-dense, and give longer appetite satisfaction and sustained fullness,” Dr. Snyder says.

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Again, doctors stress the importance of continuing to exercise when you’re on a weight loss journey. “You still want to be active,” Dr. Ali says. “You want to at least maintain the activity that you’re already doing, and ideally increase it.”

Korin Miller is a freelance writer specializing in general wellness, sexual health and relationships, and lifestyle trends, with work appearing in Men’s Health, Women’s Health, Self, Glamour, and more. She has a master’s degree from American University, lives by the beach, and hopes to own a teacup pig and taco truck one day.

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How to perfect squats, the most underrated exercise

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How to perfect squats, the most underrated exercise

Coleen Rooney does hers in the shower, Jennifer Lopez in her garden, Arnold Schwarzenegger at the gym, with such enthusiasm, he once said, “I do squats until I fall over and pass out.”

While I don’t go that far, this underrated exercise is integral to my own workouts. Squats are endlessly versatile and suitable for every age and exercise level, can be a high or low-impact exercise, and not only improve strength, but mobility and cardiovascular fitness too.

“Squats are without doubt the most effective compound exercise to build strength and burn calories, and a form of functional movement that makes everyday activities such as walking, getting out of the car and climbing stairs easier,” says the personal trainer Cornel Chin.

But 100 a day?

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Wisconsin woman prioritizes exercise after open-heart surgery

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Wisconsin woman prioritizes exercise after open-heart surgery

PEWAUKEE, Wis. — Heart disease, type 2 diabetes and different types of cancers are linked to living an inactive lifestyle, according to the American Heart Association (AHA). 


What You Need To Know

  • The American Heart Association encourages 150 minutes of aerobic activity per week for cardiovascular health
  • Cindy Milgram prioritizes daily movement after having open heart surgery in 2021
  • AHA reports that heart disease, type 2 diabetes and different types of cancers are linked to living an inactive lifestyle
  • AHA said the easiest way for someone to get moving and improve their health is to start walking


AHA said the easiest way for someone to get moving and improve their health is to start walking. This is something Cindy Milgram does often, even after open heart surgery.

“Working out indefinitely is a mental release,” Milgram said. “It’s relaxing; it allows you to focus and stay mindful on taking care of your body, listening to your body and doing what you need to stay heart healthy.” 

Since she lives an active lifestyle, Milgram was shocked in 2021 to find out she had a heart murmur.

“I was completely asymptomatic,” Milgram said. “I was going in for an annual physical. A physical that was a year later than I would have liked, but because of COVID, I did not go in.” 

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She had open heart surgery to repair a leaky mitral valve.

“I was out for about six weeks,” Milgram said. “Then I had cardiac rehab, which most women don’t get prescribed. When they do, we encourage that because it’s what helped me return to a normal lifestyle.” 

Maddie Goetsch is the fitness coordinator at ProHealth West Wood Health and Fitness Center. She said the current exercise guidelines for cardiovascular health are 150 minutes of aerobic activity per week and 75 minutes of vigorous aerobic activity. 

“It doesn’t have to be vigorous to get started, maybe just amp up the minutes a bit,” Goetsch said. “Any piece of equipment that’s getting your heart rate up. You think stair climber for those very advanced people. Even just treadmill, seated bike for my knee replacement folks. Anything that gets your heart rate elevated.” 

While exercise is nothing new for Milgram, she now realizes how important it is to live a heart-healthy life. 

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Now, she’s on the board for AHA.

“Eating a heart-healthy diet or a healthy diet and being able to workout every day, exercising, even just walking 30 minutes a day makes all the difference,” Milgram said. “Most of cardiovascular disease can be prevented if you take care of your health at an early age.”

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