I'd prefer not to have to go to the bathroom every hour, especially during a party, but whatever suits your fancy. Also, when the training regimen starts, I cannot imagine that a few extra pounds that you put on now will affect you down the road. You will lose it. When I was training for the marathon, pre-children, my wife said that I was the thinnest she ever knew me. It is grueling though, and unless L is going with you, it is a lot of time apart. That was hard. But, in the end, I did not get into the marathon and stopped training the day I got the rejection notice. Fortunately for me, it did not affect my figure!