Gym, night shift \ exercise
People who work at night can go to the gym from 4 pm to 7 pm, when their physiological functions are at their best. In a day, the maximum oxygen uptake is around 6 pm; The most stable time for human heart beating and blood pressure is from 5 pm to 7 pm; From 4 pm to 7 pm, the body's stress response ability to adapt to the external environment is the highest, and the flexibility of the nerves is also the best.