Do you think the ray penetration of the infared rays would be the same as with being in a box infared sauna? With my husband when he has an injury he gets that injured part (e.g. his calf after a trailer tongue fell on it) as close to the heater as possible and that seems to be more beneficial. I just worry that being so far from the rays that the penetration of the rays would not be enough and therefore the toxin release would be less? I wonder how you would tell without your sweat being tested? lol Anyway, thought I would ask and see what your thoughts were on it. :) Caitlin Lorraine