Comment on FLEXIBLE FITNESS: Training muscles not joints

Fitness, exercise and sports participation trends are always changing. Fitness and sports activities across a wide variety of intensities from chair-based exercises to extreme sports such as triathlons and marathons. For example, in an Ironman triathlon a person competes across three events typically running 26.2 miles, swimming 2.4 miles, and bicycling 112 miles in one day!