1, everyone runs at a different speed. The normal walking speed range of healthy adults is 1.75m/s-2m/s, and the average running speed is 3-5 times of the walking speed. The highest instantaneous speed of human running is 44.722km/h, which was created by Jamaican flying man Bolt. Running exercise is one of the most commonly used physical exercise methods, mainly because the technical requirements of running are simple and no special venues, clothes or equipment are needed.

2. The best time for running is from 9 am to 10 and from 4 pm to 6 pm. The former has fresh air and the level of adrenocortical hormone in the body reaches the peak. According to the biological clock, the body's adaptability and physical mobilization are at their best from 4 o'clock to 6 o'clock.

Generally speaking, everyone runs at a different speed. The normal walking speed range of healthy adults is 1.75m/s-2m/s, and the average running speed is 3-5 times of the walking speed.