All due respect to the MD's here, H.Pete has posted a number of threads that shared a profile of a "big guy". Just search on threads HPete has started. They caught my attention as I have a vested interest in the subject, making hammocks & suspensions that have to handle +300lbs.
Get a sleep study done, it will tell you if a cpap will help.
I'll wager a diy set of whoopies, you'll need one.
Will even make them in 1/8th for you.
Bookmarks