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What happens to your heart rate, blood pressure, and blood flow when you sleep?

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Your heart rate and blood pressure are different during sleep, and they change depending on what phase of sleep you’re in. Heart rate and blood pressure go down and are steadier during non-REM sleep. During REM sleep, they rise and are more varied, similar to daytime patterns. Changes in blood flow during this sleep period can also cause sexual responses (erections in men and an engorged clitoris in women). As daybreak approaches, both heart rate and blood pressure inch back up.

SOURCES:

American Sleep Association: “What is Sleep?”

Harvard Medical School: “The Characteristics of Sleep.”

National Sleep Foundation: “What Happens When You Sleep?”

Institute of Medicine: “Sleep Disorders and Sleep Deprivation: An Unmet Public Health Problem.”

National Sleep Foundation: “Does Your Body Temperature Change While You Sleep?”

National Sleep Foundation: “The Physiology of Sleep – Thermoregulation & Sleep.”

National Sleep Foundation: “Exercise at This Time of Day for Optimal Sleep.”

University of Washington: “What is Sleep . . . and why do we do it?”

National Sleep Foundation: “The Physiology of Sleep – The Respiratory System.”

Dartmouth College: “Chapter 53: The pharynx and larynx.”

Lung: “Cough and sleep.”

National Heart, Lung, and Blood Institute: “What Is Sleep Apnea?”

American Chemical Society: “So Tired in the Morning... The Science of Sleep.”

Reviewed by Nayana Ambardekar on March 06, 2019

SOURCES:

American Sleep Association: “What is Sleep?”

Harvard Medical School: “The Characteristics of Sleep.”

National Sleep Foundation: “What Happens When You Sleep?”

Institute of Medicine: “Sleep Disorders and Sleep Deprivation: An Unmet Public Health Problem.”

National Sleep Foundation: “Does Your Body Temperature Change While You Sleep?”

National Sleep Foundation: “The Physiology of Sleep – Thermoregulation & Sleep.”

National Sleep Foundation: “Exercise at This Time of Day for Optimal Sleep.”

University of Washington: “What is Sleep . . . and why do we do it?”

National Sleep Foundation: “The Physiology of Sleep – The Respiratory System.”

Dartmouth College: “Chapter 53: The pharynx and larynx.”

Lung: “Cough and sleep.”

National Heart, Lung, and Blood Institute: “What Is Sleep Apnea?”

American Chemical Society: “So Tired in the Morning... The Science of Sleep.”

Reviewed by Nayana Ambardekar on March 06, 2019

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What happens to your brain when you sleep?

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