When I was at University I was a cox. I loved the training on the river and the buzz of the races (and looking at the fit guys in front of me who did everything I said ) But I wasn't fit myself: I remember I went to an aerobics session and actually fainted after the warm up session!
I am reminded of the buzz I got from the whole rowing thing when I run now. I was 21 then and I would never have thought that 24 years later I would be running and would be training to take part in a 10k race.
It's great to remind yourself of where you were before and where you want to be in the future. And then make it happen!