MODEL RELEASED. Woman using exercise ball. These balls are used when exercising because their inherent instability causes more of the body's muscles to respond,thus providing a better work- out | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Hooton, Ian |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |