“there is another entire set of factors at play: the psychological. Human beings are pushing themselves to take on greater physical feats than ever before, which requires a mental push too. “The brain acts as a limiter, preventing us from accessing all our resources to prevent us from hurting ourselves,” says Epstein. “The more we learn how that limiter functions, the more we can learn how to push it back.”
Here’s a good video to watch over the weekend.