Humans walk efficiently even with their heads in the clouds

Exoskeleton-clad volunteers show that adapting to an energy-saving pace requires almost no attention. Exoskeleton-clad volunteers show that adapting to an energy-saving pace requires almost no attention.
Author Affiliations: Maintaining the most energy-efficient way of walking makes minimal cognitive demands, freeing up the brain to focus on other things, such as text messages. Credit: Julian Castle/Loop Images/UIG/Getty [...]