One of my measurements for fitness is the # of push-ups I can do consecutively. When I was younger (17-18), there was a time where I could routinely top 50. Then I remember a time about 6 months ago when I was grossly unhealthy and working on Version Vibrant, hadn't exercised in months, and where I collapsed after 20 or less. That was a low point.

Anyway, I just tested myself and reached a very respectable 46, so I am at a good place physically right now. What do you do to gauge your fitness?