“Midday sleep appears to lower blood pressure levels at the same magnitude as other lifestyle changes,” said Dr. Manolis Kallistratos, a cardiologist at Asklepieion General Hospital in Voula, Greece.
For each hour you nap, systolic blood pressure drops an average of 3 mm Hg, the researchers found. Systolic pressure — the top number in a blood pressure reading — is the force of your blood pushing against your arteries when your heart beats. Diastolic
pressure — the bottom number — is the force between heart beats.