If you’ve ever been confused about your own max heart rate, this will make you feel validated. For example, I’m 44, and the “220 minus your age” formula would have me believe my max is 176 ...

Back when I began using heart-rate monitors for cycling training, I knew that power meters were better devices, but I didn’t care—the suckers cost $5,000. Power meters record how many watts ...

You know that feeling when you’re doing something—or, perhaps more accurately, about to do something—that’s exciting and/or scary and/or really big? And you’re sweating and […] ...