Well, at least he may be home for Easter! And, given that he worked at a hospital for so long, I imagine he has healthy respect for those that do the hard work there! Tell him that when I was recovering from brain surgery years and years ago, the first time they had me use a walker, the physical therapist marveled and said "You do that remarkably well for a person your age!" I explained that I had lots and lots of elderly friends and relatives, so had seen the technique for much of my life.