i was once a fatty as well Rkwaki, but then i dieted for a week and was skinny
My all time heaviest was 170, and i was fast. Simple as that. I then proceded to lose 15 lbs in about a month, and was faster. This happens every year from thanksgiving to christmas. I get fat due to school, life, cookies, and the holidays, then after a couple weeks of being moderate in terms of cookie consumption im back to a light 155 lbs. Im 6 1. Take it for what it is.