Most of the reason is that muscles are growing. After a period of exercise, my weight is heavier than before. This is not because losing weight has no effect, but because the muscles in your body are growing. The muscle volume of the same weight will be much smaller than that of fat, but it will rise a little instead of falling. This is normal. When fat is reduced, muscles will increase, and waist and leg circumference will also decrease. Although the number is more than before and the weight is heavier than before, the figure will become more uneven.
Precautions for running
Do some warm-up exercises before running, and turn on all the organs of your body so as not to hurt your body. After running, you will speed up your heart rate and warm up well, which will help to reduce the burden on your heart.
The correct way to run should be to head forward, just above the shoulders, not to the left or to the right; Keep your body leaning forward, your back straight, don't lean forward and lean back, keep your knees bent, your toes droop naturally, and your arms are lowered and swung forward to make your breathing smooth. Running like this helps us not to get hurt.
Refer to the above? Baidu encyclopedia-running