Boys pass it more than 34 times a minute, and girls pass it more than 39 times a minute. According to the national health standards, boys in grade three get good grades when they jump from 1 16 to 126, 104 to10, pass from 34 to 97 and fail below 3 1.

Within one minute, the girls in grade three jumped from 125 to 139, from 109 to 17, from 39 to 102, and failed less than 36.

origin

Skipping rope has a long history. When Nu Wa "leads the rope in the mud and holds it by people", the rope will live with people. The ancients used ropes to keep records, and also tied harvested crops with ropes, or tied cattle and horses, tied prey and so on. Rope has become an important tool in human life. Therefore, skipping may have originated from primitive farming, hunting or military activities.

The 18th time in Jin Ping Mei, a novel of Ming Dynasty, the names "vault rope" and "jump hundred ropes" were used, both referring to skipping rope. But the "vault rope" gives us an inspiration to explore the origin of skipping rope, that is, the "vault rope" used in ancient wars.

Maybe the ancients were inspired by military activities. In the military training of tripping and avoiding tripping, they changed riding to single skipping, which gradually evolved and eventually became various skipping activities.

The earliest historical data of skipping rope is the pictures of skipping rope on stone reliefs in Han Dynasty, which proves that skipping rope has been carried out at the latest in Han Dynasty.