Each participant moves freely in the hall/area to the music. The sports leader can specify various forms of movement (crossing legs, circling arms, crouching, touching the floor, hopping, hopping with one leg, etc.). During a break in the music, the sports leader calls out a number so that the corresponding groups must be formed (e.g. number 7 = groups of 7). Whoever remains performs an additional exercise defined by the sports leader (e.g. 3 stretch jumps, 5 jumping jacks, 4 push-ups, etc.). If the group size is not correct, all participants in the group must perform the additional exercise. When the music starts again, the participants move freely around the room again, matching the music.
Variant I:
The instructor can define how the group joins together (back to back, prone position and outstretched arms meet to form a centre, one-legged stand and hands are placed on the shoulders of a group member).
Variant II:
In addition to the group formation, define the number of limbs that may touch the floor (e.g. group of 6 - 5 limbs).
