Many people have a bedtime habit they don't even notice until someone points it out. One of the most common is sleeping with one leg sticking out from under the blanket. Even on cool nights, some people instinctively leave a foot or an entire leg uncovered while the rest of their body stays warm.
Psychology says this behavior doesn't reveal a hidden personality trait. Instead, sleep researchers suggest that it is usually connected to how the brain regulates body temperature, forms bedtime routines, and creates a sense of physical comfort. What looks like a quirky habit may actually be part of the body's natural preparation for sleep.
