This elliptical unit works great, no noises, and adjustable magnetic resistance. We have it set up in our bedroom and my wife will jump on it before going to the kitchen for breakfast, is her way of busting her metabolism. I don’t hear anything. She loves it because is gentle on her knees. No impact like on a treadmill. Stable for a light jog speed. Sprinting I will not recommend it, unless you can add some anchors to the floor. Not happening… My daughter at 120 lb 5’5” she can sprint no problemSee full review