@thumperguy I am not a big person. (Five feet 1/2 inch and eighty pounds). I lost 18% of my body weight since being blessed with MAC and have tried unsuccessfully to gain it back. I have had at least three broken ribs over the years due to osteoarthritis, osteoporosis, and osteopenia. A pulmonologist told my husband to stop beating on me!( Lol )My bone density is low. Apparently, I am fragile as I break easily. (I should have drunk more milk as a child.) My ID doctor told me the vest would hurt me too much. So that’s the long and short of that! Irene