Hi
Well, the title of this post says it all !
As far as I can understand this could be caused by the fact that I stay seated a lot of time due to computer work. I'm a clean person, so this is the only reason I can think about.
Can there be other reasons?
part from sport/activities, what else could I do to get rid of that? (it started 6 months ago !

and I'm ashamed to show my butt to a doctor

)
Thanks for the help