1. Energy consumption: Fitness training consumes a lot of energy, including fat and sugar to provide energy. When the body's energy reserve decreases, it will send a signal to the brain, suggesting that more energy is needed to meet the body's needs.
2. Promote metabolism: Fitness training can promote metabolism, increase muscle mass and metabolic rate. This will cause your body to burn more energy at rest, which will make you feel more hungry.
3. Change your eating habits: If you are doing intensive fitness training, you may need more protein and carbohydrates to support muscle repair and growth. This may lead to an increase in your appetite, especially within a few hours after training.
4. Water loss: Fitness training will lead to water loss in the body, which may affect your appetite and satiety. When your body is short of water, it may mistakenly think that you need more energy to meet your body's needs.
In short, fitness training will make you feel hungrier, because it will consume your energy reserves, promote metabolism, change your eating habits and lead to water loss.