
Twin doctors Chris and Xand van Tulleken take children through the human body, and explain how medicine impacts biology during medical treatments.
The doctors surprise Ouch Award winners; four inspirational heroes receive prizes; Dr. Chris and Dr. Xand join the winners for special activities, including tank driving and sailing.
Dr. Xand dresses up as a bird in the lab; the experiment of the day finds out why people blink; Ouch Baby discovers why babies walk differently.
The doctors demonstrate bile's fat digestion with a gooey experiment; Dr. Chris explores the Covid-19 vaccine development process with scientists.
The doctors study fear's effect on the body using a large balloon pop; Ouch Babies' laughter triggers examined; an emergency patient has a sore.