What happens next?

Two men exercise inside a gym, then a man jumps rope crossing his arms and also the moving the rope on front. The man moves the rope with his right hand, then he moves both hands while skipping. then

Available choices: (I) , the man does sit ups in front of a multi colored mat.. (II) , the man jumps on front his hands and cross his arms.. (III) , the man continue exercising on a parallel rope crossing position.. (IV) , the man jumps crossing the arms, after he jumps normal for long time..
(IV)