Check crank arm's suspension to see how long it lasts. It usually takes 3 minutes to pass. Check the boom buckling, see the number and degree of arm buckling, and set the passing standard. For example, the human body is up to the maximum, and adults do 5 to pass. The half bend should be around 20 to pass. Extended data crank arm hanging refers to lifting the body, keeping the arm no longer straight and keeping the head above the horizontal bar. Keep doing this for a while. This requires a lot of muscle endurance and is not easy. In the implementation of the new Military Sports Training Program, it is necessary to hang the bent arm for 30 seconds, which is especially important for muscle strength. This way exercises the strength of upper limb flexors and shoulder and back muscles.

There is little difference between this training method and pull-ups, but pull-ups test the explosive power of muscles, and for those who need to practice endurance, crank arm hanging is a better choice.

It is said that teenagers may grow taller by practicing falling. The former Soviet news agency taught an effective way to help people grow taller. Exhale when pull-ups, inhale when the body slowly descends; Exhale when lifting legs at right angles, and inhale when lowering legs.

When descending, swing your body from side to side, and twist your body hard on the stick. The above actions can be done 12 ~ 15 times a day for young men and 2 ~ 5 times for young women. This helps to grow taller and is very helpful for people who need to grow taller.