Amanda MacMillan is a Brooklyn, New York–based freelance writer, triathlete, and health blogger for self.com.
These products claim to tone muscles and speed workout recovery. But the jury is out as to whether they’re worth the hefty price tag.
If you thought osteoporosis was only an issue for women and older men, you were wrong
A new theory behind the elusive runner's high
The biological reasoning behind our favorite pre-race laxative
How much water you actually need to drink and how to make sure you're actually drinking it
You’re strong when you run flats but as soon as you hit a hill, you’re gasping like a fish on land. Here’s what’s going on.
The downside of doing a different workout every day
If your upper-body strength leaves much to be desired, here's a bit of advice.
We know you’re curious. You should be. Boxing is a great full-body, low-impact workout. Here are a few tips for incorporating it into your fitness repertoire.
Several times now, I've come down with a sore throat and sniffles in the days following a marathon or triathlon. Am I allergic to exercise?
It's a great fitness tool—but there are other ways to use it besides swings
I've been eyeing a course record, but this summer heat is making me lethargic. Any advice on tackling the perfect ride?
It's summer! I'm doubling my mileage and already feeling the pain. What can I do, aside from cutting back or resting, to stay healthy?
Four ways to avoid a potentially dangerous inflammatory response
The number of hours you're supposed to shoot for: 4