Why did I think that was a good idea?

We are doing The Biggest Loser at work and the winner gets $500. 2nd place gets $250. I'm not going to win which is fine, but the "skinny people" have decided we all need to work out as a group once or twice a week. That's fine - I can do this even though I am a slug. Until they decide for our first group workout that our cardio circuit includes jogging UP the hill that is at a 60 degree incline and not once but FIVE times plus the exercises at the top and bottom of the hill. I'm a sport - I tried and didn't finish the 2nd circuit. The skinny people only made it 3 times so I don't feel too horrible but the asthma attack I had made me wonder WHY DID I THINK THAT WAS A GOOD IDEA??