science

It's funny how people can be so different.

I personally love the feeling of exercising, so unless I am experiencing severe anhedonia—which has happened in the past when I was on a lower dosage of antidepressant—then it always bursts my mood while I am doing it, which provides significant motivation. However, exercise does nothing for my wife except to make her feel sweaty and unpleasant, so she feels no motivation to do it, and even though I understand this intellectually I still have trouble "getting" it.