I rest on my back, blow out all of my air and suck in my stomach while my heart beat is recorded. When I suck in my stomach my the skin is pressed against my heart and each beat is magnified. You see a very pronounced beat under the skin.
Description
I rest on my back, blow out all of my air and suck in my stomach while my heart beat is recorded. When I suck in my stomach my the skin is pressed against my heart and each beat is magnified. You see a very pronounced beat under the skin.