if it doesnt shave the years off from the future... It doesnt make you age in apperance.. and keeps how old you are at the present time.. then what is it doing?

Until this last post I assumed the impressions that you didnt physically get older in age.. but rather you start to shrival and such. Start actually appearing older than you truely are. But you just threw that idea out the window. WHAT ARE YOU SAYING HAPPENS?