Too much rafting?

Is there such a thing as too much fun? Too much money? A car too fast? Daryle Singletary doesn't seem to think so, so I would saftly say that in Colorado there isn't such a thing as too much rafting. Ryan and Heather came out this weekend and we went rafting down the Colorado again. We had a great time. This time we took the afternoon trip and it was non stop screaming. The water was cold, but the weather was hot. The kids had soo much fun and the only complaint was that the water was a little cold but despite this fact they still jumped in and went swimming! All of them, so, so much for cold water!