1. Your room isn’t dark enough.
Ideally, your bedroom shouldn’t have any lights on, especially light emitted from a TV or any electronic device. When your eyes are exposed to light during the night, your brain is tricked into thinking it’s time to wake up and reduces the production of melatonin, a hormone released by your pineal gland that causes sleepiness and lowers body temperature. Light emitted by electronic devices is especially troublesome because it mimics sunlight.