Maybe when we enter a new environment, one half of our brain stays more awake than the other, so we can better respond to unusual sounds or. No wonder we don't feel rested after a first night in a new And it suggests people have something in common with birds and sea mammals. Struggling to fall asleep and/or stay asleep when you are on the road? Don't blame your pillow; instead blame the first-night effect. Sorry, there are no tours or activities available to book online for the date(s) you selected. Please choose a different date. “So my meeting is not contaminated by the first night effect,” she said. If that's not an option, she suggests spending a lot of time in the new. Difficulty sleeping in a new environment is so common that neuroscientists have a name for it: the ”first-night effect” (FNE). Scientists call this transient insomnia the “First-Night Effect” (FNE), and it is believed to come from a primal need to be vigilant in a new environment. Welcome to Ocean Valour The Brain Tumour Charity · Home The team have found their first night onboard to have been understandably. People often struggle to sleep their first night in an unfamiliar room, which might be because the left brain remains vigilant for threats. During the first night (or nap) in a new environment, in this case a sleep such as sleeping at sea, or in the case of self-preservation.