Blood volume. If you are tired and no blood is able to get to your body and you heart keeps going faster your heart is probably going to fail.
<span>I have to talk to you. I appreciate your humor but lately you've really been putting me down in front of my friends, and it's been bothering me. I know you don't mean it, but you've been hurting my feelings and making me feel insignificant in front of my friends. Do you think you can try not to do that anymore?</span>
