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Harvard Health Letter

How much sleep do we really need?

Ask the doctor

Published: August, 2019

Q. How much sleep do we really need, and what happens if we get too little or too much?

A. We spend about a third of our lives sleeping, so you've asked an important question.

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Daily Health Tip

Try the tree pose

To build concentration and balance, try doing the tree pose: Stand with your feet directly under your hips, feet parallel. Lift your right foot and rest it on the inside of your left leg, under your knee. Clasp your hands together in front of your heart. Keep your gaze forward and take up to six easy breaths. Then repeat, this time standing on your right leg and lifting your left. If your balance is shaky, rest your hands on a chair in front of you.