<human>: Summarize the given text in a few sentences.

A friend of mine who I'd say I respect quite a bit has teased me before in the past about my body (e.g. calling me a "negative B cup" when I'm a 36D, and things similar to that).  I've also seen him post from pages that feature girls that are what the media would consider "hot" - big breasts, big butt, small waist, and so on.

This is a friend whose opinions I used to really take into consideration, and while it would make sense to just ignore him, I'm a little hurt that a friend could say those things, especially in front of a whole group of people, like he has done before.  I'm doing this for my health, but I'm also eating better and exercising in hopes of showing him that he can't bring me down for good.  Is this healthy?  I also work out to feel less tired, I want to become better at running, and because my BMI is in the overweight range.
<bot>: Friend teased me about my body, and I wanna prove the haters wrong by getting awesomely fit.  Want to make sure this isn't the crazy talking.