Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

Fitness Pro Superhuman Troy outlines a two-week daily arm-training plan designed to produce fast and noticeable size increases.

It's no secret that strength training offers a range of benefits, which is why it should be part of everyone's fitness routine. Strength training is just as important as heart-boosting cardio for ...