It's getting cold
It's getting cold, and it's going to be agonizing on lap four when they have to get back out into the surf...
The campsite sprint exercises really put them in their place. Their repeated failure to stay together as a team has resulted in so much punishment. They were able to skip the last campsite because everybody stayed in the proper push-up position. It's amazing how well they perform when they know that there is a reward. The next time somebody says 'I can't', the entire team will al learn that you can. You can, and you will. Where the mind goes, the body will follow.