The warmth which the body gets after doing the exercise. And besides all of it after doing exercise we feel very fresh and start our day with freshness, happiness and joy fulness. I basically think it depends from person to person. For me this is the reason. For other it maybe something else.
I really like feeling nice and warm. Like a nice workout that leaves me all sweaty and then stepping outside to feel the brisk winter air – it’s rejuvenating