Brains, animals, and whizzing on an electric fence. We asked the MythBusters for some help with your favorite myths.

Adam Savage and Jamie Hyneman have been co-hosts of MythBusters for 13 seasons.

They've filmed more than 200 episodes and tested 960 myths (with about just as many explosions), so we asked them to suss out fact from fiction — and whether they could remember their earliest episodes.

David J. Bertozzi / BuzzFeed

You use only 10% of your brain. (Myth.)

David J. Bertozzi / BuzzFeed

Adam: Yeah, that's totally a myth.

You lose most of your body heat through your head. (Myth.)

David J. Bertozzi / BuzzFeed

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