oops almost forgot... 2 years ago my husband was hit by a 3/4 ton pickup while he was on his motorcycle, sent him flying into the pavement.... his doctor told him that if he had been a skinny guy he would be dead.
Your husband is lucky.
BTW, the one time I was thankful to have a huge behind was sliding on my scooter in the snow :o)
Had an employee who was in the PNW Ocean after falling over board crabbing and lasted 6hrs with no hypothermia but no loss of limbs or organ failure.
However all the attention made his head swell and after some major mistakes on the job had to let him go. I say he has salt on the brain syndrome.
But the Drs. said his being 350 lbs and only in his underwear with floats in them is what kept him alive in 57 degree water.