NASA astronaut Sunita Williams Expedition 33 commander exercises on the Cycle Ergometer with Vibration Isolation System.

NASA astronaut Sunita Williams, Expedition 33 commander, exercises on the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory of the International Space Station while participating in the first triathlon in space simultaneously with athletes in the Nautica Malibu Triathlon held in Southern California.