Do you have a habit of being judgemental and critical about your own body?
Have you been known to avoid situations where you feel others will judge your body?
It's natural to want to improve your body, because when you look good this tends to mean you're getting enough exercise and are eating the right things.
However, the important thing to consider is what type of attitude you're adopting towards yourself during this time.
Because if you're putting yourself down, telling yourself you're inadequate and ugly, then this is a form of bullying and it needs to be addressed.