Replying to Being tired and doing tricks

So i went out skiing on wednesday and I was doing 5s pretty well, this is my first year skiing ever so im not that great yet and i just learned fives and I had no problem spinning them and was feeling really great in the park. Then i went out Friday night again and felt pretty good but didnt throw any 5s only 3s then today i went out all day and night and tried throwing 5s at night and i just couldnt seem to do them and couldnt get the spin nicely and was having trouble and was feeling pretty tired. Im just wondering since i was tired that it could be affecting my game little with throwing 5s and what not. Does anyone else have this problem ever?