Preload is the stretch. The amount of volume being returned to the right side of the heart from systemic circulation. Afterload is the squeeze. The amount of resistance the left side of the heart has to overcome in order to eject blood.
guitar & beach A Beach and the Sun can be harsh on the Guitar. This is what Rick Curtis told me one time when I was playing my guitar on the Ventura Beach Promenade. He told me told me that the sun and the beach is not good for the guitar wood.
Lana Del Rey has revealed her latest single, "West Coast," after performing it at this weekend's Coachella festival. The track appears to be the first from her upcoming album, "Ultraviolence," produced by Dan Auerbach of the Black Keys.