After fitness, the body will concentrate blood supply to the muscles and body surface to alleviate the physical discomfort caused by training, while the digestive system of the body is in an anemia state. Eating cold or frozen drinks at this time will cause strong stimulation to the stomach and easily lead to damage to physiological functions. Light will lead to loss of appetite, and severe will lead to acute gastritis.

Correct way: It is best to add some carbohydrates and protein drinks after a short rest.