From the shoulder-width boxing position, a tennis ball is bounced with one hand while the other hand is always held at the temple. The participant moves freely on their feet as if on a track (forwards, backwards, sideways - also in a circle, bouncing the tennis ball at the same point).
Variant:
A fight between everyone (or duel): the participant whose tennis ball touches the floor or is held twice in succession completes an additional task (press-ups, stretch jumps, squats). The opponent's tennis ball may be touched, but there is no physical contact.
