75 Hard: What happened when I tried the internet's toughest fitness challenge? - This brutal 11-week fitness challenge has ...

If you feel stuck in an exercise routine that still feels hard, learn the overlooked reasons workouts fail to get easier over time and what you can do to address them.

The prevailing training advice to “keep your hard days hard and your easy days easy,” while intended to be simple and straightforward, can really mess with your head. Most runners understand what ...

Only 24.2% of American adults meet the required Physical Activity Guidelines for both aerobic and muscle-strengthening activity. These guidelines recommend that, in a week, adults need: Staying fit ...