To some degree I do believe people can spot health problems in other people.
After all we do chose mates and assess their overall health based on looks.
In terms of longevity, I feel there's probably some minimum amount of exercise you need to do, after you might be better off at addressing other things if you have other deficiencies. (dental health, snoring, etc)
Thinking in terms of a sports car. You can do all kinds of things to maintain and improve the engine. But if you want long term success, don't forget about the breaks or other systems that might need take you out a lot earlier.
In terms of longevity, I feel there's probably some minimum amount of exercise you need to do, after you might be better off at addressing other things if you have other deficiencies. (dental health, snoring, etc)
Thinking in terms of a sports car. You can do all kinds of things to maintain and improve the engine. But if you want long term success, don't forget about the breaks or other systems that might need take you out a lot earlier.