...Brain. The Big Kick. Brain asks the question of whether you can kick a ball to France. Footballer Leah Williamson and physicist Steve Mould are on hand to help find the answer. [S]
...Brain. Electrici-free. Brain asks the question of what it would be like living without electricity. Paralympian Sarah Storey, environmentalist Helena Marschall and a powerless Leila offer help. [S]
...Brain. Live Underwater. Brain wants to know what would it be like if we lived underwater. Zoologist Megan McCubbin and inventor Jun Kamei wade in with Leila to help. [S]
...Brain. Annoying. Ken's had enough of Brain's questions, but that leads to a new one: why does Ken get so annoyed? Can Leila, a psychologist and presenter Andy Day help find the answer? [S]
...Brain. Sleepless. Brain has been keeping Ken up with another question: "What would happen if you never went to sleep?" Leila is wide awake, and Dr Ranj is on call to help with the sleep facts. [S]