An Economical Way to Burn Calories, Fat and Lose Inches - In Just 4 Weeks! Reduce your exercise time with a super-efficient, low-impact workout. Tailor your workout specifically to your fitness and comfort level - from beginner to elite athlete - with 12 intensity settings. Starting or stopping exercise is safe and easy with large footboards along tread belts. See your workout stats - Speed, Time and Distance- with the 3 large LCD readout windows. Backed by a Bowflex® 100% Satisfaction Guarantee. Some assembly required.