Joel Jamieson at 8 Weeks Out is launching a certification around his specialty: conditioning.
One of the articles he posted up about it is really worth reading for anyone who has talked themselves out of doing cardiovascular training:
How Conditioning May Save Your Life (And 3 Things to Start Doing Today)
I'd highly recommend taking the time to read the article. You may have no interest in MMA, or conditioning for athletics, or training methodology . . . but reducing the risk of stroke and increasing longevity? It's hard to justify not sparing a few minutes to look into how you can do that.