Body Modification Support Group
Body art is a modification of any part of the human body for artistic or aesthetic reasons. It can range from the socially acceptable decoration (e.g., pierced ears in many societies) to the religiously mandated (e.g., circumcision in a number of cultures), and everywhere in between. This is a place to share your body modification experiences and ask questions.

I'm pretty sure that your lifestyle won't affect your navel piercing. You may need to take it a little bit easier for a few weeks after getting it done in order to allow it to heal. Best thing is to chat to a piercer and get their advice - they're usually very helpful and knowledgeable.