Tens of millions of people pretend to exercise every day. Have you ever played these jokes?

If you walk well, then 20 thousand steps a day

Occupy the first few steps of the circle of friends and become a small goal for some health people.

Walking is really good exercise. Even the World Health Organization has said that the best doctor is himself, the best medicine is time, and the best exercise is "walking".

But if you want to crush others step by step, then you may also crush your knees.

Orthopedic experts pointed out that although walking exercise is good for health, but to master the appropriate exercise methods, blindly walking a lot may hurt your legs!