Just want to comment on cycling: while it may have benefits, it can also create problems. I have been an avid cycler for nearly my entire life. I've never had any problems that I would consider 'significant,' other that I've always (?) had a very weak stream when urinating. I've recently visited a urologist because of what I thought was an infection (frequent and urgent urination). Well, to make a long story short, after several bouts of antibiotics and an IVP, he decided to 'take a look' (not fun in itself), but then he found that my urethra was nearly closed-off before he could see inside my bladder. He then decided immediately to open the blockage (one of the worst experiences I've ever had, and I've had several orthopedic surgeries). He thought that the blockage was from some trauma, but I believe, and he agreed that it is possible, that it is from cycling.

FWIW