This morning I attempted a WBTB. I got up four and a half hours after I fell asleep and knew I was in rem because I had just been in a dream. I remember going to the bathroom as part of my WBTB, and having a boner forcing me to sit down and pee. This morning I looked it up and apparently you get boners during the night only in REM sleep and even Thought this is only for guys I thought it’s a pretty cool way to check your state. Thoughts?