“[…] why in three words. High lactose threshold,” Hex smirked. “As my body uses up all the available energy, a signal comes from the brain that says one thing: More! So, another engine starts up, but that one isn’t as efficient as the first one – it produces lactic acid in the muscles that slow you down. Your threshold tells you how much you can take, before slowing down, and mine is off the charts!”
Please note, this story is experimental.