Real Fitness Equipment™ is a line of performance equipment created to promote extreme strength, speed, flexibility, endurance, athletic base, stamina, power and healing for our bodies. They are high intensity, low impact interval trainers that offer it's users a versatile workout/therapy session each time they use them. The isokinetic pistons produce resistance in both the concentric and eccentric motions. They are perfect for beginners, athletes of all levels, body builders, injury rehabilitation, and much more!