When you can’t sleep on your first night in a new place, your brain is trying to protect you. Many animals sleep with only half their brain, while the other half stays alert to possible dangers. It’s called the ‘first night effect’ in humans, because.
Did you know? When Michigan was a young territory, deer were so common and hunting such a part of life, that deer skins or whole deer were used as money. A deer carcass was worth a dollar, and hence, the dollar became known for what it was worth - a buck.