What happens if you go for a run in a fasted state 20 hours fasting? Is it bad for you?
When you exercise in a fasted state, your body is forced to rely on stored glycogen for energy instead of glucose from food. This can lead to several physiological changes, including:
- Increased fat burning: When glycogen stores are depleted, your body turns to fat stores for energy. This can help to promote weight loss and improve body composition.
- Improved insulin sensitivity: Exercise in a fasted state can help to improve insulin sensitivity, which is important for regulating blood sugar levels and preventing insulin resistance.
- Increased growth hormone production: Growth hormone is a hormone that helps to build and repair muscle tissue. Exercise in a fasted state can increase growth hormone production, which can help to improve muscle recovery and performance.
However, it's important to note that exercising in a fasted state is not always appropriate. If you are new to fasting, it's important to start slowly and gradually increase the duration of your fasts. It's also important to listen to your body and stop if you experience any negative side effects.
Potential risks of running in a fasted state
- Hypoglycemia: If your glycogen stores are depleted and you don't consume any food before your run, you may experience hypoglycemia, which is a condition characterized by low blood sugar levels. Symptoms of hypoglycemia include dizziness, lightheadedness, and fatigue.
- Muscle loss: If you exercise in a fasted state for too long or too often, you may experience muscle loss. This is because your body will use muscle tissue for energy if it doesn't have access to glycogen or other sources of fuel.
- Increased risk of injury: If you are not used to exercising in a fasted state, you may be more likely to experience injuries. This is because your body will be fatigued and less able to protect itself from injury.
Related Questions
- What are the benefits of exercising in a fasted state?
- What are the risks of exercising in a fasted state?
- How long should I fast before exercising?
- What should I eat after exercising in a fasted state?
- Should I exercise in a fasted state if I am new to fasting?
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