30 Photos That Can Raise Your Pulse in a blink

You’re not getting enough sleep

When you sleep, your body isn’t doing as much, so your heart can slow down. “Sleep is your time to reset. If you’re not getting that recovery phase, your adrenaline levels during the day can be higher,” Dr. Mills-Frazier says. Excess adrenaline charging through your system during the day can lead to a faster heartbeat. The National Sleep Foundation recommends adults get seven to nine hours of sleep per night.