Can too much exercise cause weight gain?
James Craig
Published Jan 19, 2026
Weight gain
Why am I exercising more and gaining weight?
Glycogen or sugar that your muscle cells convert to glucose is the energy source for your muscles. When you exercise regularly, your body stores more glycogen to fuel that exercise. Stored in water, glycogen has to bind with water as part of the process to fuel the muscle. That water adds a small amount of weight, too.
Can exercising too much cause you to not lose weight?
One of the main reasons why burning calories through exercise may still not result in weight loss is due to overexertion, or inflammation of your body. If you exercise too hard on a daily basis, there is an excess of inflammation in your body. All the added up inflammation makes you gain more weight than lose.
What are the symptoms of over exercising?
Here are some symptoms of too much exercise:
- Being unable to perform at the same level.
- Needing longer periods of rest.
- Feeling tired.
- Being depressed.
- Having mood swings or irritability.
- Having trouble sleeping.
- Feeling sore muscles or heavy limbs.
- Getting overuse injuries.
Can working out everyday make you gain weight?
Cardio can't directly cause you to gain weight or fat. According to Mayoclinic, how you eat and drink in addition to your physical activity level are things that ultimately determine your weight. This is also impacted by your metabolism — the process by which your body converts what you eat and drink into energy.
24 related questions foundCan too much exercise cause bloating?
“When you exercise you stimulate the sympathetic nervous system. This increases the production of stress hormones and shuts off digestion, which can lead to some bloating and swelling of the body.”
How much is too much exercise?
For the rest of us, doctors recommend 150 minutes of physical activity. However, even in those 150 minutes, you can overdo it and push yourself too hard.
Is 2 hours of exercise a day too much?
Those who need to lose weight might need even more. Based on that, working out 2 hours per day might not be a very big stretch for most people. However, if you are new to exercise, a 2 hour workout can do more harm than good. Start with 15 minute sessions, then gradually at time as your body adapts.
Why am I gaining weight when I'm eating less and working out?
These hormones regulate how your body uses energy (and burns fat). “When your thyroid is underactive, your body uses less energy while you're in rest mode, leading to weight gain over time," says Moskovitz.
Why is my weight stuck even after exercise and diet?
Your slower metabolism will slow your weight loss, even if you eat the same number of calories that helped you lose weight. When the calories you burn equal the calories you eat, you reach a plateau. To lose more weight, you need to either increase your physical activity or decrease the calories you eat.
How many days a week should you exercise to lose weight?
How much weight you lose depends on the amount of exercise you're willing to commit to and how closely you stick to your diet. If you really want to see results reflected on the scale and continue to make progress over time, you need to commit to working out at least four to five days per week.
Can too much exercise cause water retention?
Intense workout stresses our body in a positive way. That stress and micro-tearing damage to the muscle fibers induces water retention in the body. Your body releases cortisol during exercise, which can impact your fluids and cause your body to retain water.
Why have I gained 10 pounds since working out?
“When you start exercising, your muscles start gobbling up fuel called glycogen,” says Krista Scott-Dixon, Ph. D., Director, Headspace Adjustment Bureau, Precision Nutrition. Since glycogen stores water, you could gain up to 10 pounds in water weight alone, says Scott-Dixon.
Why do I weigh more but look thinner?
He explained that "muscle is more dense than fat, so an identical volume of it will weigh more than fat." Exercise physiologist Krissi Williford, MS, CPT, of Xcite Fitness, agreed and said even though your muscle mass weighs more than your fat, "it takes up less space, which is why you look leaner and more toned."
Why did I gain weight overnight?
They can be caused by many different factors: eating a large meal, excess salt intake, water retention, constipation, varicose veins and hormonal changes. The increase on the scale does not always equate to an increase in body fat. True weight gain is a process that happens over time, not overnight.
How many hours should I workout to lose weight?
If you want to lose weight, shoot for at least 200 minutes (more than three hours) a week of moderate intensity exercise with everything else consistent, says Church. If you cut calories and exercise, he says, you can get away with a minimum dose of 150 minutes (2 1/2 hours) a week.
How many hours should I workout a day to lose weight?
Get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity. The guidelines suggest that you spread out this exercise during the course of a week. Greater amounts of exercise will provide even greater health benefit.
Is walking 7 miles a day too much?
The rule is that there is no rule—not yet, at least. According to The New York Times, though, new research gives a more ambitious goal: 15,000 steps a day to avoid the risk of heart disease.
Is 4 hours of exercise a day too much?
So, what exactly is "too much" exercising? Well, it depends on factors like your age, health, and choice of workouts. But in general, adults should get around five hours a week of moderate exercise or two and a half hours of more intense activity.
Is it okay to exercise every day?
A weekly day of rest is often advised when structuring a workout program, but sometimes you may feel the desire to work out every day. As long as you're not pushing yourself too hard or getting obsessive about it, working out every day is fine.
Is 3 hours of working out too much?
Three hours of exercise is too much for the average person. It's more likely to lead to burnout than sustained weight loss.
Why is my belly getting bigger when I exercise?
Still, breathing too hard during a workout can cause you to suck in a lot of air. “Instead of the air going straight to your lungs, it can make its way down into your digestive system,” Josh Schlottman, a certified trainer and nutritionist, tells Healthline. “When this happens, you'll feel bloated and puffy.”
Why does my stomach look bigger after running?
“The GI tract tends to slow down, and it's not going to move that air through as well,” says Freedburg. That's going to cause it to build up in your lower abdomen; hence, bloating. To combat this, rather than gasping for air when you run, which can lead to more stress, you'll want to focus on belly breathing.
Can ab exercises make your belly bigger?
If you're dedicated to getting toned abs, a larger stomach is probably the very last thing you want. But, if you're only doing ab exercises, your stomach may actually get larger. Instead, you need to focus on a full-body fitness routine that includes fat-burning cardio and cutting calories from your diet.
How long does it take to see results from working out 5 days a week?
You're putting your whole heart and soul into the fitness regimen, going to the gym five days each week. You should be able to notice visible changes after about two weeks of training 5 days a week.