"Their caffeine levels soar only to fall as the day progresses in the face of rising sleepiness. They might be better off taking much smaller more frequent doses of caffeine, equivalent to a quarter of a cup of coffee, as the day wears on," he says.
A study by Czeisler and scientists at the Division of Sleep Medicine at Harvard Medical School showed that subjects who practiced caffeine microdosing had better cognitive test results.
The study also reveals that caffeine microdosing may keep alertness and performance beyond the 9-to-5. According to James Wyatt, lead author of the study:
Our results highlight the impairments in cognition that accompany all work schedules that lie outside the usual 9 to 5 workday. In addition, they reveal an entirely new way to use caffeine to maintain alertness and performance in the face of sleep loss.
This practice is especially beneficial for those working night shifts, essential workers, military, doctors, emergency first responders, and practically anyone who needs to stay awake and alert in their job.
How do you do caffeine microdosing?
Take lesser amounts of caffeine, and spread them across the day. Try a cup of coffee in the early morning, a Viter Energy Mint around 10 a.m. and again at noon, and another cup of coffee at 2 p.m.
Of course, if you don't want to fill up on coffee and lattes and other caffeinated liquids, but you still want that caffeine. Viter Energy Mints  are just the ticket. The tasty mints perk you up and refresh your breath.
Viter Energy Mints have 40 mg of caffeine, B vitamins, and of course, mint, which has a host of health benefits (see our blog "What is peppermint? What are its benefits?" ).Experts advise against taking caffeine too late in the dayso as to avoid sleep disruptions.
Each has 40 mg of caffeine in a sugar-free mint, equal to about one-quarter of a mug of coffee. You can take one mint per half-hour or hour to get a steady stream of caffeine into your bloodstream, or four in quick succession to equal about one mug of java.
Viter Energy Mints  energize you quickly because you can take them under the tongue, or sublingually, where the caffeine quickly enters the bloodstream much quicker than through the stomach.