Our fitness editor shares her struggle to find a fitness regimen — and mindset — that's effective and fun.
Why the advice to "optimize in 45" may still hold true.
It's okay to straighten your arms, but don't lock them. Here's why.
Experienced and novice runners should just trust their instincts, says a new study.
There are several reasons why you might feel muscle soreness — but workout quality is not one of them.