 it's like right you're on a ice skating rink right and people have been skating too long and the the surface is all pitted that's what your cartilage gets like as you get older then the zamboni guy comes around put some fresh water and freezes it up and you got this classy shiny ice skating rink this is what it's doing inside your knee inside your hip and it's turning this cartilage cell up and on and you start making more cartilage like you did say 20 years ago and you feel the difference you may feel it in three or four weeks