Why does my stomach look bigger after cardio?

Author: Arno O'Hara  |  Last update: Tuesday, May 13, 2025

That full, swollen, tight feeling in your belly can also be more likely to occur if you're dehydrated, swallowing too much air while exercising, or have been eating lots of high-fiber or carbonated foods and beverages, experts say.

Why does my stomach look bigger after exercising?

When you work out, blood rushes to your muscles, making them bigger. Any fat over the muscles obviously stays the same, but if the muscles under it grow, so will your overall size.

Is it normal to look fatter after cardio?

Posture and Appearance: After working out, your body may be more pumped with blood, which can temporarily change your appearance, making you feel fuller or larger. It's important to remember that weight fluctuations are normal, especially when starting a new fitness routine.

Why does my stomach look fatter after running?

Bloating: Physical activity, including running, can lead to temporary bloating due to increased air swallowing or digestive processes. This can make the abdomen appear larger. Water Retention: Exercise can lead to temporary water retention, especially if you're sweating and then rehydrating.

Why is my belly fat increasing after a workout?

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

Bloating Causes: Bloated Belly After Exercise? – Dr. Berg

Can cardio cause belly fat?

Although exercise is extremely healthy, too much can actually be a stress on the body. Overtraining happens when you go too hard, too often, or don't take time to recover. This can increase inflammation as well as the stress hormone cortisol. Cortisol can lead to fatigue and weight gain, especially around your belly.

What does a hormonal belly look like?

You can easily pinch the excess fat because it builds up under your skin. When hormonal imbalances cause abdominal weight gain, the fat accumulates around your internal organs (visceral fat). Your belly enlarges and takes on an apple shape. You may look extremely bloated instead of like you're carrying extra weight.

Why is my stomach so big even though I exercise?

Unhealthy eating is the biggest driver of big bellies. Too many starchy carbohydrates and bad fats are a recipe for that midsection to expand. Instead, get plenty of veggies, choose lean proteins, and stay away from fats from red meats. Choose healthier fats in things like fish, nuts, and avocados.

Can cardio make you gain weight?

According to Noah Abbott, a CrossFit coach in Brooklyn, prolonged, steady-rate cardio can deplete our body's Triiodothyronine, or T3 hormone. This hormone is responsible for metabolism, and a depletion of this hormone can cause the body to go into a mode where it stores and gains more fat than usual.

How long does water retention last after exercise?

Especially in the first days and weeks of a new workout routine, your body is going to retain water. In most cases, it goes down within a few days.

Why do I look puffy after cardio?

Swelling after intense exercise is primarily caused by temporary inflammation. Acute, exercise-induced inflammation is a normal physiological response to pushing the body during intense physical activity. During a challenging workout, tiny tears develop in our muscle fibers.

Why am I heavier after cardio?

Increased muscle mass

Exercising causes tiny tears in your muscle fibers. It sounds bad, but it's actually a good thing. After your workout, your body works to repair these tears, allowing your muscles to get bigger and stronger. So even though you may be losing fat, you're gaining muscle.

Do you still burn fat after cardio?

The afterburn effect: how to keep burning calories, even after your workout has ended. Yes, it's possible: your body can burn calories even after your workout is finished. It's called the “afterburn effect,” and you can learn how to utilise it to maximise weight loss.

How do I debloat my stomach?

How to reduce bloating
  1. exercise regularly to improve your digestion and help prevent bloating – exercise can also help when you're feeling bloated.
  2. chew with your mouth closed to avoid swallowing air.
  3. drink plenty of water.
  4. eat foods high in fibre if constipated.
  5. eat smaller, more frequent meals instead of large meals.

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 is my stomach getting bigger even though I'm losing weight?

Many women notice an increase in belly fat as they get older even if they don't gain weight. This is likely due to a lower level of estrogen because estrogen seems to have an effect on where fat is located in the body.

Does cardio increase belly fat?

Aerobic or cardio exercise

Studies show that aerobic exercises for belly fat help reduce belly fat and liver fat. Some great cardio of aerobic exercises for belly fat include: Walking, especially at a quick pace. Running.

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.

Is 30 minutes of cardio a day enough?

The American College of Sports Medicine (ACSM) recommends that adults should accumulate at least 30 minutes of moderate-intensity aerobic activity 5 days per week OR engage in 20-minutes of vigorous activity 3 days per week.

Why is my stomach fatter after working out?

“Gastric emptying slows down as blood is redirected to more critical areas, such as the muscles,” she explains. For some people, this may result in a bloated feeling at the end of a workout, particularly after high-intensity exercise or super-challenging core moves.

What are the stages of losing belly fat?

In general, though, weight loss can be delineated into three stages: rapid weight loss, gradual weight loss, and maintenance. The length of each stage depends on the individual, Michelle Routhenstein, R.D., preventive cardiology dietitian says.

What does a cortisol belly look like?

Cortisol belly simply looks like abdominal fat, and there is no way to identify it by appearance. More important than its appearance is what cortisol belly can do to your health. Visceral fat is considered particularly dangerous because of its location near vital organs and its metabolic activity.

What exercise burns the most belly fat for females?

Aerobic exercise includes any activity that raises your heart rate such as walking, dancing, running or swimming. This can also include doing housework, gardening and playing with your children. Other types of exercise such as strength training, Pilates and yoga can also help you lose belly fat.

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