Young Blonde Girl Reveals Her White Top And Short Jeans On The Stationary Exercise Bicycle

Ergometers, such as CEVIS (Cycle Ergometer with Vibration Isolation and Stabilization System), are used in space (e.g. in the ISS) to counter cardiovascular deconditioning in the microgravity environment.
Stationary bikes are also used for physical testing, i.e. measuring power, and exercise .