Revealed: The gene mutation that make us Night Owls

Night owls who struggle to get enough sleep are often diagnosed with delayed sleep phase disorder. Scientists may have finally discovered the genetic mutation responsible for this social jetlag. Some of us have an internal clock that’s genetically programmed to run between 2 and 2.5 hours slower than the rest of the population due to a mutation in the body clock gene CRY1, and that’s what makes us stay awake at night.