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That’s because their ankles are so extraordinarily flexible that their feet can make up to 45 degree angles with their shins. You can clearly see this in the video. It’s a level of flexibility comparable to wild chimpanzees, which walk up trees in much the same way. They plant their soles flat against the trunk, allowing them to hold their bodies closer to the trees and reducing the energy it takes to climb.
For comparison, most people can only bend their feet by 15 to 20 degrees. If you or I tried to match the flexion of a Twa climber, our ankles would rupture catastrophically and we wouldn’t be walking, much less effortlessly scaling a thick vine.
But the Twa’s secret isn’t in their ankles, which are indistinguishable from those of other people. Instead, the team found that the Twa’s flexibility stems from calf muscles (gastrocnemius) with unusually long fibres—far longer than those of the Bakiga, a group of neighbouring Ugandan farmers who don’t climb trees. The team found the same differences in the Philippines. The tree-climbing Agta hunter-gatherers have far longer gastrocnemius fibres than the non-climbing Manobo farmers.
Venkataraman suspects that their calf muscles aren’t born this way. Instead, their fibres lengthen with practice. “People who frequently wear high heels have short calf muscle fibres, and their ankles are stiffer as a result,” he says. Regular tree-climbing does the opposite for the Twa.
Originally posted by chasingbrahman
Go ahead. Ask a member with Celtic feet anything.
Am I Celtic? No
Have I Celtic feet? That would be how things appear.
But my balance en pointe back in my ballet days was preternatural.
Originally posted by Saorsainn
I need to see pictures of these ape feet!
My feet look different than one another and are a cross between some of those listed in the meme. Anyone want to figure out where I come from?
Originally posted by boymonkey74
am I a freak?
Originally posted by rickymouse
This is kind of strange. They just found out that some people have different type feet than others. You would think that this would have been discovered over a hundred years ago. This shows us how little the experts really know about our bodies. This shows us how unaware that those with degrees are, following the writings of long ago and not opening their eyes and looking. At least there are a few people seeing these things now instead of saying everyone is the same. Not two people in this world are the same.
Originally posted by boymonkey74
The toes next to my big toe is longer than all the others on my odd feet, I often trip up over it lol....am I a freak?