JQ,
I have an umbilical hernia as well. I was worried about it as someone suggested that it was really dangerous (bowel getting constricted in the hernia). Then my doctor told me that it wasn't really a big deal. That yeah, sure, I should get it fixed one day. Probably better if I do it after I lose some weight.

I think that the hernia developed about a year ago. Since then I have been on the MMWT a couple of times and gone up to Meysan lake. Plus a fair amount of local activity.

I also had bilateral inguinal hernias. Got those fixed 13 years ago. Gotta tell ya, the rehab on that little slice and dice was a bitch. Probably two weeks before I could comfortably move around and a month before I could be really active. But apparently the muscles in the lower abdomen are more involved in pretty much any bodily movement than the muscles right around the belly button. I'm sure the doctors in the crowd will confirm or correct this.