Heart palpitations often will pass on their own after a few minutes, but the effects of heart palpitations can be reduced by:
Focusing on breathing: Inhale deeply through the nose, hold the breath for a moment then slowly exhale. Repeat this for a few minutes.
Drink water: Drinking a glass or two of water can help normalize your heart rate.
Change position: If you are sleeping in a hunched position on your side, you might be at an increased risk of experiencing heart palpitations. Try lying on your back.
Eat less before bedtime: Sometimes eating a large meal just before going to bed can result in heart palpitations. Try eating a few hours earlier or having a smaller meal at dinnertime.