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What effect does creatine have on fitness? Please say all the main points.
1, providing energy: because creatine can provide energy quickly (all human activities rely on ATP, that is, adenosine triphosphate to provide energy, and ATP is stored in the human body very little, and ATP is consumed quickly during exercise, so creatine can quickly synthesize ATP to provide energy).

2. Promote the maintenance of nitrogen level: nitrogen balance can be divided into positive nitrogen balance and negative nitrogen balance, and the environment of muscle synthesis needs positive nitrogen balance. Creatine intake helps the body to be in a positive nitrogen balance.

3, muscle cell expansion: creatine makes muscle cells expand, which is what everyone usually calls creatine water storage. Creatine can "lock" water in muscle cells and make muscle cells "full".

Extended data

The principle of creatine:

The human body has three functional systems, all of which produce ATP, which is one of the main sources of body energy. Anaerobic exercise will produce ATP violently. For example, when the human body needs to do a group of heavy squats or bench presses, it needs a very fast energy source to complete this group of actions. At this time, the human body mainly relies on ATP to provide this rapid energy, and ATP comes from creatine phosphate in muscles.

The storage of adenosine triphosphate in human body is very small, and it needs to be synthesized continuously, but the synthesis speed of the body is very slow, so the body is tired. Therefore, timely creatine supplementation can effectively improve muscle strength, speed and endurance. Improve physical fitness and training level to prevent fatigue.

Baidu encyclopedia-creatine