Holy carpe, 
, that sounds hecka good! :o I want to try that sometime! 
As for what I normally drink during a Yomise, there is a little water, but I drink a lot more fruit juices! Simply Lemonade is one of my favorites & I also like to mix it with cranberry/cherry juice! I’m basically a sugar-aholic, so I’m drinking that as often as is possible! 
(Sometimes, though, I’m not drinking anything… Even when I have a glass or my water bottle nearby!? 
)