Because that is when the muscle grows. Every time you "workout" you are essentially breaking the muscle apart, while resting it rebuilds to make itself bigger in order to not break the next time, hence getting stronger.
During rest and low-intensity exercise, muscles rely on stored glycogen as a source of energy. Glycogen is broken down into glucose, which is used for fuel by the muscles. If glycogen stores are depleted, the body may turn to other sources of energy, such as fat.
You should rest your muscles for a count of 10 between each rep. It is also important to not over work your an muscles when exercising. This does not answer my question sorry :(
rest
Rest.
it's important to rest your bicep muscles so they heal quickly and without further complication.
You cantexercisethe same muscles everyday because your muscles need time to heal and repair themselves.Do a workout regiment like for example upper body onMondayand you rest those muscles onTuesday, and do your lower body etc. etc.You need to rest your muscles at least one day so they can have time to heal and grow the most important part of working out is resting.
If you flex your muscles too much, you may experience muscle fatigue, soreness, and potential muscle strain or injury. It is important to allow your muscles time to rest and recover to prevent overuse injuries.
The firmness of muscles is called muscle tone. It refers to the slight tension or resistance that muscles maintain even at rest to support posture and movement. A healthy muscle tone is important for overall strength and coordination.
To prevent muscles from getting smaller after a workout, it is important to consume enough protein, engage in regular strength training exercises, and ensure proper rest and recovery.
You are using the muscles too much. Rest them for awhile.
REST
Yeah, muscles grow on rest days.