My FRiend, I can guarantee you, that those 90+ year olds didn’t have to “do” any exercize, because their life WAS full of exercise! We need to to exercise today because our lifestyles are sedentary compared to those of yesterday.
now THAT I will agree with.
All the seniors I have ever known were fairly active, doing things like gardening, crafts, carpentry, ect.
none of them sat around on their butts all day
But they weren’t running marathons, lifting weights, chewing on celery and carrots exclusively all day or had 1% body fat and a six pack.