Your Body, Explained EP11

1) Could a tattoo help you stay healthy? | Carson Bruns 2) How do you know if you have a virus? | Cella Wright 3) A personal health coach for those living with chronic diseases | Priscilla Pemu 4) What is earwax — and should you get rid of it? | Henry Ou 5) The bias behind your undiagnosed chronic pain | Sheetal DeCaria 6) How to deal with your insomnia -- and finally get to sleep | Matt Walker 7) How sleep can improve your immunity | Matt Walker 8) How does heart transplant surgery work? | Roni Shanoada