Why am I gaining weight despite working out?

Author: Lauretta Wolf  |  Last update: Thursday, June 26, 2025

Muscle is denser (meaning a lot less fluffy) than fat, says Dr. Calabrese. Put another way, 10 pounds of muscle takes up a lot less space than 10 pounds of fat. So, as you start working out regularly and building strength, the new muscle you build may eventually weigh more than the fat you've burnt off.

Why do I keep gaining weight even with exercise?

Exercise can increase your appetite, so you might eat more than usual. Loading up on empty calories, from processed foods like energy bars, sugary cereals, and soda, can contribute to weight gain. Finding the right nutrition plan to support your weight-loss goals can be tricky.

Why do I feel fatter even though I'm working out?

You will most definitely build muscle while working out, that's why you feel that you're getting bulkier, because that's new muscle mass. You should now focus on your nutrition to lose excess fat. Most would advise a calorie deficit.

Why am I gaining weight while working out and in a calorie deficit?

Yes, strength training can cause an increase in weight even if you are in a calorie deficit. This is because muscle is more dense than fat and so it takes up more space.

Why have I gained 10 pounds since working out?

Muscle is denser (meaning a lot less fluffy) than fat, says Dr. Calabrese. Put another way, 10 pounds of muscle takes up a lot less space than 10 pounds of fat. So, as you start working out regularly and building strength, the new muscle you build may eventually weigh more than the fat you've burnt off.

WHY AM I GAINING WEIGHT ON 1500 CALORIES?

How to flush out water weight?

  1. Exercise Regularly. Daily exercise provides several health benefits, including preventing water retention. ...
  2. Drink More Water. Drinking water to reduce water weight sounds counterintuitive, but it helps. ...
  3. Manage Salt Intake. ...
  4. Cut Carbs. ...
  5. Focus on Certain Foods and Herbs. ...
  6. Try Supplements. ...
  7. Up Your Caffeine Intake.

Why am I gaining weight so fast when I barely eat and workout?

You Might Be Eating Too Little

This phenomenon is called “starvation mode,” and while your body isn't actually starving, it will naturally hold onto whatever calories it receives in an effort to help you maintain your energy balance.

How long does water retention last?

Water retention may clear without treatment in a few days. However, if there is a health problem causing you to hold onto fluid, your swelling may worsen over time. You may find that the body parts retaining water become tight, swollen, and painful. If untreated, heart or kidney problems may get much worse.

Why is my body fat increasing with exercise?

As you increase musculature, fat gain can occur due to the caloric surpluses required to increase SMM. This is a well-recognized phenomenon and is commonly referred to in gym-speak as “bulking.”

Do you gain weight before losing it?

“Per unit volume, muscle weighs more than fat, so shedding fat and gaining muscle may not immediately change the scale but will result in changes in shape, tone, and measurements,” says McGowan. In other words, you may look leaner as you build muscle and lose fat, but you may actually start to weigh more.

Why do I look chubbier when I start working out?

While at the gym, you'll be actively working your muscles and all the while dehydrating. The combination of your pumped up muscles, dehydration and overworked muscles might make you feel well toned then, a few hours later, you appear flabbier despite the exercise you know should be making you lean.

How long does it take to start losing weight when exercising?

Stage 1: Fast weight loss

In the beginning, weight loss happens pretty rapidly. Over a period of 4-6 weeks, you'll likely see a noticeable difference in your body weight [1] — either on the scales or by the way your clothes fit.

Why am I getting fatter while dieting and exercising?

You're eating more

This habit, or similarly rewarding yourself with dessert or a high calorie meal, could be sabotaging your efforts to lose weight. It's easy to overestimate how many calories we burn exercising and if we turn around and consume all of those calories or more, it will likely lead to weight gain.

How do I speed up my metabolism?

5 ways to boost metabolism
  1. Exercise more. Add interval training to your cardio routine and burn more calories in less time. ...
  2. Weight train. By adding muscle mass to your body, you can burn more calories at rest. ...
  3. Don't skip meals, especially breakfast. ...
  4. Eat fat-burning foods. ...
  5. Get a good night's sleep every night.

How long does it take to see results from working out 5 days a week?

As a rough guide, you'll probably notice some initial changes in the first four to six weeks, but longer-term changes (what you're working toward) will often take around eight to 12 weeks. The good news is that you're likely to start feeling better quickly.

Why is my weight stuck even after exercise and diet?

So as you lose weight, your metabolism declines, causing you to burn fewer calories than you did at your heavier weight. 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.

How to lose 4 pounds of water weight overnight?

4 ways to lose water weight immediately
  1. Drink more water. It might be a little difficult to believe but drinking more water can actually help you shed water weight. ...
  2. Reduce intake of salt. Too much salt or sodium in your diet may be contributing to water retention. ...
  3. Consume fewer carbs. ...
  4. Exercise.

Why am I gaining weight if I'm working out and eating healthy?

The No. 1 reason you might gain weight while working out and eating healthier is because you're gaining muscle mass. And that's a good thing!

How much weight can I lose in 1 month by drinking hot water?

How much weight can I lose in 1 month by drinking hot water? There is no specific weight loss amount attributed solely to drinking hot water, but it can aid in overall weight loss efforts by increasing metabolism and hydration.

What illnesses make you put on weight?

Medical reasons

In some cases, underlying medical conditions may contribute to weight gain. These include: an underactive thyroid gland (hypothyroidism) – where your thyroid gland does not produce enough hormones. Cushing's syndrome – a rare disorder that causes the over-production of steroid hormones.

What kills water weight?

Water weight is not usually a cause for concern, but it can be uncomfortable and recurring. Reducing salt and carbohydrate intake, keeping hydrated, and frequently exercising are all good ways to lose water weight and prevent it from returning.

How long does temporary weight gain after exercise last for females?

It's usual to suffer a brief weight gain following physical exercise as a result of things like water retention, inflammation, and muscle glycogen replenishment. The length of this weight increase, though, is usually brief and goes away in a few days.

Why is my body holding onto fat?

1. Your Metabolism Will Slow Down to Store Fat. The more you work out or manage your calorie intake to lose weight, the more your metabolism wants to compensate by slowing down to maintain your current weight, this is called metabolic compensation. It kicks in to preserve and store fat for future energy.

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