I just wanted to post this to share something that happened to my while venturing in the end. I got through the bedrock fountain in the end with half a heart left. Next time I say I'm going to the end, can someone remind me not to look at all the endermen? It'd help me out a lot.
I know about the pumpkin, but I didn't bring one because i didn't plan on going to the end. I had a water breathing pot because I wanted to explore the location where the end portal was, which was underwater. I guess krysyyjane or aikar put one there, because it turns out there is no stronghold.