1 variant. We strain and weaken muscles of the set aside not basic leg in fast rate
2 variant. We bend and unbend a knee of a basic leg in fast rate
*** the Top part of a body it is motionless.
*** we cost either on all foot or on полупальцах.
*** Knees can be held slightly bent or straightened
*** Without transfer of jolting on all case it turns out at a strong deflection