Why am I gaining weight if I'm working out?

Author: Dr. Carlee Hayes V  |  Last update: Monday, November 17, 2025

But the reason for it is simple: Weight training builds lean muscle mass, which is denser than body fat. A pound of lean muscle mass and a pound of body fat tissue might weigh the same, but they take up different amounts of space.

Why am I gaining weight when I've been working out?

  • Muscle gain: As you exercise, your body may start to build muscle. Muscle is denser and heavier than fat, so you may gain weight even as you lose fat.
  • Fluid retention: When you exercise, your body retains water to help repair muscle tissue. This can also contribute

Do you gain weight before losing it?

Yes, it's common to experience temporary weight gain before starting to lose weight, especially when beginning a new exercise or diet routine. This can be due to factors like water retention, muscle gain, or changes in eating habits.

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

Working out can cause short-term weight gain as your muscle mass increases. Post-workout inflammation may cause temporary weight fluctuations. Workout plateaus, supplement use, and dietary changes can also stall your weight-loss efforts. Try not to obsess over the number on the scale.

Why am I chubby even though I exercise?

You're eating the wrong things

Research has shown that diet has a greater impact on weight loss than exercise. Be sure to eat enough fruits, vegetables and healthy protein, and try to avoid ultraprocessed foods or items with added sugar.

Does Lifting Weights Make You Gain Weight I Best Way To Exercise For Weight Loss

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.

Why am I not losing weight working out 4 days a week?

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.

Why am I gaining weight if I m counting calories and working out?

Your body composition may be another reason why you are still gaining weight while in a calorie deficit. If you have a higher body fat percentage and lower muscle mass, then you are probably burning fewer calories than if you had more muscle mass.

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.

What is the 30/30/30 rule for weight loss?

The 30/30/30 is a weight loss method that involves eating 30 g of protein within the first 30 minutes of your day and following it with 30 minutes of light exercise. This morning routine is rooted in sound science, and it could be a good way to increase your capacity to burn fat while keeping lean muscle.

Which body part loses fat first?

Mostly, losing weight is an internal process. You will first lose hard fat that surrounds your organs like liver, kidneys and then you will start to lose soft fat like waistline and thigh fat. The fat loss from around the organs makes you leaner and stronger.

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 gaining belly fat while working out?

This is because exercise—especially higher-intensity exercise—can produce a temporary inflammatory response in your body. This can also trigger temporary water retention.

Is it normal to gain weight before losing it while working out?

Remember that weight is just one indicator of your overall health and wellness, and it can change from day to day. You may start gaining muscle but not losing fat when you first start your barre routine — and it's perfectly normal. A lot of people bulk up before slimming down, especially when they're new working out.

How do I know if I am gaining muscle?

5 Secret Signs You're Building Muscles
  • Increased Strength. Even without documented muscle growth, you're making gains if you're getting stronger. ...
  • The Scale is Going Up. ...
  • Your Workouts Feel Easier. ...
  • Your Posture Is Better. ...
  • You're Recovering Faster from Your Workouts. ...
  • Summing It Up.

Why am I gaining weight if I barely eat?

If you're asking yourself, “Why am I gaining weight when I barely eat,” several factors may be at play. Your body may be holding onto fat stores if your eating habits are inconsistent or restricted. Or, your weight gain may be the effect of a sedentary lifestyle, medical condition, or long-term stress.

How long does temporary weight gain after exercise last?

Glycogen binds with water as part of the process, which can add 1 to 3 pounds of initial water weight gain. The effect, however, is short-lived and should end in a few weeks to a month.

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.

Why have I gained 10 pounds since working out?

Gaining weight after working out is likely due to muscle fiber inflammation, muscle glycogen and water weight gain, and over time, muscle mass gain. If weight loss is your goal, seeing an increase on the scale when you've been making an effort to exercise can be frustrating.

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.

How to reset metabolism?

Here are some of the best ways to get your metabolism back on track.
  1. Optimize your thyroid function. ...
  2. Eat a healthy, nutrient-dense, gut-friendly diet. ...
  3. Increase your protein intake. ...
  4. Increase your fiber intake. ...
  5. Eat the majority of your food earlier in the day. ...
  6. Stay well hydrated. ...
  7. Drink coffee and tea.

How long does it take to start seeing results from working out?

Building visible muscle generally takes time, specifically anywhere between eight and 15 weeks, the experts say. "Substantial muscle growth can take several months or even years, depending on your genetics, consistency and effort", Pelc Graca says.

Why is my body not letting me lose weight?

Muscle helps keep up the rate at which you burn calories (metabolism). 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.

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