One of the new scientific programmes at Halley is the Life Science suite of experiments, one of which is the sleep study. We’re all taking part in it, and the idea is to monitor the quality of our sleep, and how the perpetual darkness and isolation affect us. The study involves filling out lots of questionnaires where we declare how we feel, wearing special blue light emitting glasses which simulate the daylight to help us be active during the day, doing reaction time tests on a computer, and sleeping a few nights throughout the season wired up with all sorts of sensors to monitor the quality of sleep. The Doc tells us, after putting all this instrumentation on, to try and relax and get a good nights sleep and to pretend none of the kit is attached to us. Good night!