I already own a bifold … best piece of equipment ever! Haven’t missed a day in over a year since it arrived. Bouncing to music is the way to go … I’m almost 80 … I’d swear this rebounder is keeping me alive … and well! I’ll be making another purchase soon as a gift for a friend. I can’t thank you folks enough for the quality engineering design and construction of the Cellerciser. Having blown through 2 cheaper models I appreciate this one even more.