Frau liegt auf dem Boden und macht Sit-ups während des Sportunterrichts - Stockfoto & -bild

Shot of a group of people exercising with instructor in a pilates class

Happy young woman doing crunches in a gym

Participant of fitness classes are lying on mats and raise torsos to stretch the muscles of the abdomen

Young female woman doing yoga exercise.

Group of people stretching on yoga mats to de-stress

Shot of a group of people doing a back stretching on the floor

Relaxed and smiling female participant of yoga lies with her head resting on the mat

Closeup shot of a man with raised hands with yoga group in the background

Happy, young girls having good time during yoga classes

Shot of a suffering woman during a leg stretching