You may have seen people on TikTok or Instagram talk about a sleep hack called "sun gating." It's a simple concept:

Go outside soon after you wake up and let the morning sunlight hit your eyes, without looking directly at the sun.

While the name may be new, the science behind it isn't. Health experts have studied how morning sunlight exposure affects your body for years.

It turns out that getting bright, natural light early in the day can help reset your internal clock (called your circadian rhythm) which plays an important role in how well you sleep and how you feel during the day.