Blood. What would we do without it? Not much, it turns out. Blood keeps our bodies running nice and hot, it fills our engorged muscles, and it provides us our many boners. In fact, you might say that blood gives the whole world a boner. But how does blood work, and what is it? In this episode, your hosts, one of whom is technically a scientist, go hemo-globetrotting around the high pressure world of blood, asking in-cyte-ful questions like: Can you die if your blood is too hot? How do you get new blood? Can blood be in your body and in a cup at the same time? Later on, Mike wears leg bags, Josh leaves his clothes on, and Tapan recaptures the magic... with someone new.

Pairings: the hole where your spleen used to be; secret dogs; cumin pie

• The worst epidemic of the 19th century
• You might be a pro athlete
• Leg pants
• Hose down the garbage
• He's just tired