One of the best ways to assess this is through melatonin production, a key marker of circadian health. As we age and accumulate wear and tear on our bodies, melatonin levels naturally decline—both in peak production and total melatonin output over the night. For example, the peak melatonin levels of an average 20-year-old is 100 pg/ml and just 40 pg/ml for the average 60-year-old.

So why does it take time to calculate? Circadian age isn’t based on a single night—it’s a moving average of your peak melatonin levels and total nightly melatonin production over the past three months. This ensures your results reflect real, long-term trends rather than daily fluctuations.

You're just a few days away from seeing this key piece of your health puzzle. Stay tuned—your circadian rhythm holds the key to better sleep, better energy, and better aging!