Aloha! I know I'm not in Hawai, but it's so warm, that I managed to get a mini sun burn, which was thought to be impossible, since I have an awesome skin type which can be terribly pale and go terribly dark by tanning without any sun burn, but I was wrong. The sun burn is barely noticeably, so It's fine.
I went to the reception and asked about a gym. Turns out they have a gym open from 08:00-20:00 for free!