Aerobic step machines; elliptical exercise machines; exercise equipment, namely, rowing machines; exercise equipment, namely, abdominal boards; exercise equipment, namely, chest pulls; exercise equipment, namely, treadmills, rowing machines, stair stepping machines, resistance machines, stationary cycles; exercising equipment, namely, powered treadmills for running; exercising equipment, namely, weight lifting machines; stationary exercise bicycles; stationary exercise bicycles and rollers therefor; vibrating apparatus used in fitness and exercise programs to stimulate muscles and increase strength and physical performance