1–7: You’re getting enough sleep

8–9: You’re borderline

10 or higher: You’re sleepy

Stanford Sleepiness Scale

Another way to evaluate daytime sleepiness is with the Stanford Sleepiness Scale.* Rather than assessing how sleepy you’ve felt over


SOURCE: Hoddes E, Zarcone V, Smythe H, et al. Quantification of sleepiness: A new approach. Psychophysiology 10:431-436, 1973.

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