The best time to ... drink caffeine When: 9:30 a.m. - 11:30 a.m.
Why: "Cortisol is a hormone that helps promote alertness and reaches peak levels in the blood first thing in the morning," says Steven Miller, Ph.D. candidate in neuroscience at Uniformed Services University of the Health Sciences in Bethesda, Md. "These blood levels tend to drop after this -- around 9 a.m. -- and spike later in the day between noon and 1 p.m., and again at 5:30 and 6:30 p.m." Miller's research suggests that the best time to drink your (first) morning cup of coffee is in the time slot when your cortisol level first begins to drop to compensate for decreased alertness.
Ready to unleash your inner beauty junkie?
Enter your email and check the boxes below to get
free samples, exclusive deals, discounts at Total Beauty Shops,
and expert beauty tips delivered straight to your inbox!