Weighted Hands are a new kind of dumbbell. One you swing while you walk.Walking with Weighted Hands is better then using a Peloton treadmill, bench press with Olympic barbells or free weights. You don’t need a universal weight machine. Weighted Hands are better than cycling on a peloton or Schwinn air dyne recumbent bike, pumping Weighted Hands is more efficient use of your time then walking or running on a treadmill, riding an elliptical, climbing a stair climber, lifting weights, better than PX 90, better than biking, better than mountain biking, better than doing kettle bells, better than running, but not as good as cross country skiing. For more details go to the Weighted Hands website. All the research is there, all the interviews with long time Weighted Hands users are there. All the photos of our equipment is there. All the videos demonstrating how to use Weighted Hands is there.