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ABOUT THE SLEEP CYCLE (cont.)
Remember that everyone’s sleep patterns are different, and everyone’s Data A is different. Almost-
awake moments may be frequent or occasional, sporadic or regular. A 20- to 30-minute Data A is not
uncommon. Moreover, multiple almost-awake moments can occur within one sleep cycle. To best
assess your sleep, look to see whether your Data A lengthens as you continue to use the SLEEP-
TRACKER®. An increasing Data A means you’re getting more consistent sleep. Also, look at your sleep
data to make sure you have extended periods of sleep without almost-awake moments. If that’s the
case, a short Data A is no cause for worry, since you’re getting sufficient periods of deep sleep.
To establish your personal baseline, keep track of Data A for 7-10 nights so you can find out how rest-
less each night’s sleep was relative to the others.The more almost-awake moments you have (based
on your individual norm), the less restful your night’s sleep. If your sleep is consistent, Data A will
probably only vary by a few minutes from one night to the next. If Data A deviates significantly from
your normal baseline one night, think about what you did before going to sleep that might have
affected your sleep cycle. Factors like alcohol, cigarettes, late evening exercise, eating late, and spicy
