I have a confession to make. I am addicted to spinning and just added another class to my schedule. That's 3 classes a week - oooh, squeeze my ass. (No seriously, if anyone wants buns of steel, spinning is definately the way to get them!)
It was my post-PhD resolution to get fit - and getting fit I have been getting ;). I only wish I'd done it earlier - genuinely, I feel brighter, more energetic and proud of myself. The latest studies have found exercise to be as good as anti-depressants and cognitive-behaviour therapy (the treatment of choice for depression) in reducing mild depression and I'm certainly seeing the effect on my general mood (although I have not been depressed, in case anyone is worried!)
Next stage (on the persuasion of one of my spinning instructors)....weight training :O
Now, I have to keep this up as the demands of my clinical training get tougher!