Why do special forces and special police have to train logs? What's the effect?

Not only lift, but also lift back and forth.

There are many ways to do physical exercise.

This is mainly to exercise the spirit of teamwork.

Because if a person is lazy or can't persist, he will fail.

It is also necessary to assign the order of height in order to give full play.

Similarly, there are rubber boats, rubber boats in the mud, and ammunition boxes of several hundred kilograms.