I really really really love these! I'm just out of a shower right now and I feel so alive, but also a bit worried. See, when I started taking these about a month ago, it was a real effort to even stay under the shower for a few seconds, my whole body would just be screaming at me to get out. But it was also kind of an adrenaline rush, because apart from the blood vessels dilating there's the fact that the shower at my house gets louder and more powerful the colder you switch it to, so on freezing it's absolutely roaring in your ears and you feel like you're being pummeled by a water cannon. The world outside the shower dims and you feel like you can't escape. In short, it's everything to make the adrenaline system go insane! But after a while it becomes so pleasant and such a sure fire shot of life into even the most mundane of days. But I just noticed now, that while I'm still getting the adrenaline buzz, I'm feeling more and more comfortable in these showers every day. I just stayed in for 25 minutes there, and by the end I had a warm sensation all over, I couldn't feel the water hitting my skin anymore, and I could feel blood pulsing through my head in a very pleasant way. Then it hit me, this is what being in bed on a winter morning feels like! And given what my track record on managing to get up in those situations is like, it freaked me out that I could very conceivably stay under that shower til I froze to death. It put me in mind of those poor lobsters who boil to death with no fuss cos they don't notice the gradual increase in heat. So my question is this, does anyone know how long is safe to stay in these showers? I can't find any answers on the web but I've seen suggestions that biological info can make a difference, so I'm average weight, 21, female caucasian if that helps. Thanks a mil!