I don't think that is true whatsoever. There might be a few people in millions who absolutely can't do anything.

Everyone can exercise, no matter what condition: bad heart, missing lung, missing limbs, etc. There is some form of exercise that can be done. You name a condition, I'm sure I can find someone on youtube with that condition absolutely crushing a work out.

Very very few people are physically disabled to the extent that they can't exercise. I see people who walk with canes lifting weights. Water aerobics can also be a good option.

> a lot of people WONT exercise though

Honestly, considering the overweight and obese population is growing we have a problem with systemic overeating that needs to be corrected first. It doesn't matter how much exercise you do if you eat more than you need.

Even if you grant that many overweight/obese people merely won't exercise, certainly at least some people can't exercise.

The important question is how many people _can't_ exercise, and why, and what exercises have they tried?