What are our sleep cycles in the night?

In a normal sleep period, a person experiences four to six sleep cycle.

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• While cycles vary in length, each sleep cycle can last about 90 minutes.
• Rapid eye movement (REM) sleep makes up 20% to 25% of total sleep in healthy adults.
• As you cycle through non-rapid eye movement (NREM) sleep, various bodily functions slow down or stop altogether. Metabolism drops by around 15% and both heart rate and blood pressure go down.
• Stage 3 NREM sleep or “deep sleep” is believed to be the most critical stage of sleep for regenerating your body and brain. Deep sleep decreases across the lifespan, with one receiving less deep sleep as they age.
• On average, we spend about two hours per night dreaming mostly during REM sleep.
• On average, adults sleep on their side 54% of the time, on their back 38% of the time, and on their stomach 7%.

Sleepcycle