Matt Webb's keynote at reboot11 is pretty great and inspiring and full of interesting things. One of those interesting things is this mention of a South Indian martial art called Kalarippayattu:
There's this idea in Kalarippayattu that you reach with your body an optimal state of awareness and readiness [p19], where you're instinctively and intuitively ready for anything, and it's as if, and I quote, "the body becomes all eyes."
Which reminds me of Roald Dahl's The Wonderful Story of Henry Sugar and Six More