The Season 3 finale draws ever nearer, but before we get to that big beautiful Butt episode, we need to make a detour to those nifty tools on the ends of our limbs: hands and feet!

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[Trivia Question]

Heel-toe or toe-heel running

https://pubmed.ncbi.nlm.nih.gov/31525171/

[Fact Off]

Trench foot and (possibly, tenuously) water balloons

https://www.ncbi.nlm.nih.gov/books/NBK482364/

https://www.wemjournal.org/article/S1080-6032(06)70334-9/fulltext

https://apps.dtic.mil/sti/citations/AD0666752

https://www.sciencedirect.com/science/article/pii/B978012821606400017X

http://content.time.com/time/specials/packages/article/0,28804,2049243_2048654_2049039,00.html

[Ask the Science Couch]

Nail care evolution/history

https://www.britannica.com/story/how-do-monkeys-and-apes-trim-their-fingernails

https://theconversation.com/curious-kids-why-do-we-have-fingernails-and-toenails-110989

https://www.floridamuseum.ufl.edu/science/ancient-primates-had-grooming-claws/

https://www.sciencedirect.com/science/article/abs/pii/S0047248417305134

https://tedium.co/2017/02/07/fingernail-trimming-history/

[Butt One More Thing]

Bidets and poopy hands

https://pubmed.ncbi.nlm.nih.gov/29709985/ 

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