OK
One Punch Man is Saitama. He started getting his super strength the day when he started exercising for three years. The exercise he did are one hundred push up, one hundred sit up, and jogging around the whole town. All he ate was a banna for breakfest and save A/C FOR THREE WHOLE YEARS!!!!!!! DANG THATS HARSH!!!!!!! Look at the right hand and see how he reacts. Whoops Got to go wait for the next one =-)