“Writer’s block I” by Drew Coffman on Flickr https://www.flickr.com/photos/drewcoffman/4815205632

“Jerry has Writer’s Block” by Jimmy Brown on Flickr https://www.flickr.com/photos/jimmybrown/8399714101

“To All the Worlds” by Tomi Tapio K on Flickr https://www.flickr.com/photos/tomitapio/5601194718

‘The classic stemming position” https://en.wikipedia.org/wiki/Crack_climbing

“Kalaripayattu” https://en.wikipedia.org/wiki/Kalaripayattu