Hand-cranked fitness equipment has low oxygen intake, fast movement speed and strong explosive force, so the sugar in the human body cannot be decomposed by oxygen during exercise, so it has to rely on "anaerobic energy supply", which is a typical anaerobic exercise.

Anaerobic exercise refers to the high-speed and intense exercise of muscles in the state of "hypoxia". Anaerobic exercise is mostly an exercise with high load intensity and strong instantaneity, which is difficult to last and the time for fatigue elimination is slow.