Walk: With Your Chest Held High Because It's Energy Efficient

Pushing off from the toes and buttocks of each alternating “back leg” supports the spine, lifts the chest, and imparts a sense of power, ease, and confidence. (Location 738)

walking is so energy efficient, it takes months or years for small doses of exercise to add up to substantial weight losses. (Location 3372)

Plug walk -- walk with chest held high, spend energy on the totality of the form