Drinking Water - can usually clear up/change the color of Urine. WHAT COLOR IS YOUR PEE? Urine Color Chart: "The color of your urine says something about your HEALTH." Infographic from Cleveland Clinic HealthHub
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.