The average brain weighs between 1.3 and 1.4 kg. Those 3 pounds of fleshy mass contain every memory, thought or feeling you'll ever experience. It would be a real shame if something were to happen to that, right? Well, things do happen to it - nasty, painful things that can cause weird and unseen damage. One moment you're making good speed, the next you're in an ambulance wondering why you can't remember your birthday. Mat and Peter have both been there, as have many, many others. Concussions are a very real part of motorsports, but we don't like to talk about them. So this week we're doing exactly that as we dig deep into the world of brain damage. Helping us are the expertise of retired neurosurgeon dr. Peter Richards, and the technical know-how of Richard Harfoot, who works for body armour producer D30. So enjoy, and don't lose your head! Want more? Visit our website or support us on Patreon. With big thanks as always to Brad Baloo from The Next Men and Gentleman's Dub Club, who wrote our theme song. Check out The Nextmen for more great music!