That's a really good point. My question, as I should have clarified, is more about what additional energy would need to be expended (from a physics standpoint, more so than a biological one). So, how much more energy to propel an individual forward at 5 m/s as compared to an individual simply...
My question revolves basically around how much energy would be required for a person to exert to remain at a constant speed. While exact numbers would obviously not be possible without a specific example (and would probably be impossible even with a specific example), I am thinking more...