Bad sleep makes your body's stress system active, raising blood pressure, while good sleep calms it down and lowers blood pressure.

“Then we have sleep, which affects your blood pressure through yet another mechanism, the autonomic nervous system. Poor sleep increases what we call sympathetic tone, which raises your heart rate and constricts your blood vessels. On the flip side, deep restorative sleep allows the parasympathetic nervous system to take over, which lowers your cardiac output and your vascular resistance at the same time. is literally like switching from the accelerator to the brake.”