I went from being a scrawny guy in my teens, to a chubby/fat gamer in my late teens/early 20s, and then a fit athlete in my mid 20s. While I had envisioned much more interest from the ladies, my biggest surprise was how much nicer, kinder, and helpful random people were. And in a professional setting, co-workers and leaders just treated you more seriously - especially when it came to handing out leadership roles on projects etc.