The way it works in normal people seems to be that exercising regularly feels really awful at first, but after the first few times it doesn’t feel that bad (indeed, it starts releasing endorphins) and the person starts getting in shape.
Let’s imagine that it works like that for one segment of the population, but for another segment it never stops feeling awful and doesn’t have the same fitness effects. You’d see the exact same effect you note.
Obviously, what you say is evidence that regular running can make anyone more fit as long as they persist– but it’s not necessarily strong evidence.
Let’s imagine that it works like that for one segment of the population, but for another segment it never stops feeling awful and doesn’t have the same fitness effects.
I’m in a segment where it does have fitness effects, but never stops feeling awful. I was in the Army, and it was possible for me to meet the physical fitness standards, but even exercising strenuously every day during eight weeks of Basic Training never produced the exercise high that people speak of.
The way it works in normal people seems to be that exercising regularly feels really awful at first, but after the first few times it doesn’t feel that bad (indeed, it starts releasing endorphins) and the person starts getting in shape.
Let’s imagine that it works like that for one segment of the population, but for another segment it never stops feeling awful and doesn’t have the same fitness effects. You’d see the exact same effect you note.
Obviously, what you say is evidence that regular running can make anyone more fit as long as they persist– but it’s not necessarily strong evidence.
I’m in a segment where it does have fitness effects, but never stops feeling awful. I was in the Army, and it was possible for me to meet the physical fitness standards, but even exercising strenuously every day during eight weeks of Basic Training never produced the exercise high that people speak of.