In the current go-go-go, optimize-everything fitness and exercise culture, the downtime of running recovery can seem like wasted time. But without rest, it’s hard to sustain progress — and a huge part ...

You only benefit from the training you recover from. Workouts alone are not what make you faster and stronger, says Michael Joyner, MD, a physiologist at the Mayo Clinic. Fitness gains occur as tissue ...

Ultrarunner Michael Wardian goes from one running challenge to the next. His most recent? Breaking the record for the fastest time completing 10 marathons in 10 days. He crushed the world record, ...