In reply to Al Evans:
> (In reply to highclimber) It's been shown in several surveys that regular lifelong sex, even if it's manual, reduces the incidence of prostate cancer in later years.
Actually, simplistically, research suggests that frequent sex in younger life (20-30s) increases the likelihood of prostate cancer, and that after 50, frequent bouts of self abuse can start to lower the likelihood.
Source:
http://www.nhs.uk/news/2009/01January/Pages/Masturbationprostatecancer.aspx
Regarding the OP, I'm asexual, and have pretty much no libido. So I don't tend to partake regularly in the odd ham shank, have only had one long term relationship, and that was pretty much barren in the bedroom department, and at my best, climbing, mountain biking & running wise, I was rubbish!
Being tight, I found paying for events usually enabled me to find the motivation to train for them. I'm not sure if this helps your case though.