Is drinking Red Bull before a cardio workout a dumb idea? [more inside]
posted by Senor Cardgage on Jan 2, 2009 - 17 answers

How does one keep their weight down when to exercise is to risk sudden heart stoppage? [more inside]
posted by bunnytricks on Feb 21, 2008 - 16 answers

FitnessFilter: Heavy-duty cardio workout; is my heart going to explode? [more inside]
posted by blue_beetle on Oct 24, 2006 - 13 answers

The "new, state of the art" cardio machines at my gym always tell me my heart rate is unreasonably high (170 beats per minute) even though I'm working at a level where I can still maintain a breathy conversation. Occasionally, the machine will say my heart rate is something totally wacky, like 220. [more inside]
posted by Kololo on Jan 16, 2006 - 9 answers