Symptom: Sudden pain in a calf or thigh accompanied by swelling, redness or warmth. Possible problem: A blood clot in your leg (deep-vein thrombosis, or DVT), usually caused by dehydration, prolonged inactivity, pregnancy, birth-control pills, hormone therapy or certain types of cancer.
Description. Flywheel Sports, the revolutionary indoor cycling brand with 28 studios in the US and abroad, has made it easier than ever to book your favorite fitness classes with this innovative app. Purchase credits, reserve classes, and check performance data all from your iPhone.
Photo: A typical flywheel on a gas-pumping engine. The flywheel is the larger of the two black wheels with the heavy black rim in the center. This is one of many fascinating engines you can see at Think Tank, the science museum in Birmingham, England.