A member asked:

Why does my heart beat fast when i lay down after a long day?

A doctor has provided 1 answer
Dr. Clarence Grim answered

Specializes in Endocrinology

Heart fast supine: Need to know what you mean by fast? It may beat faster for a short time because when you assume the supine position the fluid collected in your lower extremities reenters your blood stream your heart must beat faster to move it around until you pee out the difference or until your BP and heart rate control systems thinks things are OK

Answered 1/8/2016

1.7k views

Thank

Related Questions