We talk a lot about getting enough sleep. But we don't talk nearly enough about what tells your body when it's time to sleep.
For most of human history, the answer was simple: darkness. Today, darkness is harder to find. Phones, televisions, tablets, streetlights, and bright indoor lighting can keep our environment illuminated long after the sun goes down. And your body notices.
Light Tells Your Body What Time It Is
Your body follows an internal 24-hour clock called your circadian rhythm. Light is one of the strongest signals helping regulate it. Bright light during the day supports alertness. As evening arrives and light decreases, your brain begins receiving the message that it's time to prepare for rest. But bright, blue-enriched light at night can interfere with that message and delay the body's natural preparation for sleep. This doesn't mean blue light is always bad. Timing matters. The light that helps keep you alert during the day isn't necessarily the light you want surrounding you at 10:00 at night.
Sleep Is Recovery Time
Poor sleep doesn't only leave you tired.
Sleep is an important period of recovery for your brain and body. Your immune system, hormones, metabolism, brain function, and cellular processes all follow daily rhythms. This is why R.E.S.T.O.R.E. MILA looks beyond individual symptoms and asks what may be influencing the systems underneath them. Light is one piece of that environment.
Bring Back the Dark
Supporting your circadian rhythm doesn't have to be complicated. Get outside in natural light during the day—especially in the morning. Dim your lights as bedtime approaches. Put the phone down earlier. Keep your bedroom dark. Sometimes healthier living isn't about adding something new. It's about restoring something modern life has taken away: bright days, dark nights, and the natural rhythm between them.
Keep Connecting the Dots
Follow R.E.S.T.O.R.E. MILA for more education from Dr. Christopher Thoma on the interconnected factors that influence how we feel, function, and age.