Sirzy that's a great achievement.
I was keen but rubbish at sport at school - I got picked for the hockey team because I turned up for training, not because of any innate skill.
I played a bit of squash in my 20's, dabbled in aerobics, yoga, swimming, tennis etc.
Then met DH, got married and had DCs, and did very little for about 10 years. I started going to a gym maybe 7 or 8 years ago after one of the DCs pointed out my squishy tummy.
Then DH got a job overseas. DCs and I stayed back in the UK to finish the school year, so to fill his time DH took up cycling and running again (he'd also had his couch potato years). By the time I joined him he was hooked. I was jealous of his new-found fitness, found a C25K thread on MN and the rest is history
.