lol Nas PA is different. PA only takes like a minute of your time, whereas exercise takes much more time. 1 min of exercise is like... no effect. And then you can go on PA quickly for like a few minutes while in the middle of studying and get back to it right after. It's harder to do with exercise, because there's the changing into exercise gear, preparing mentally and physically, warm up, exercise, cool down, replenish, that all takes a lot more time than a few minutes of posting on PA.