Earth Flip-Flops Make You Work While You Walk

What: Earth Breena Sandals, $99

Why: Usually, flip-flops are banished to the back of my closet – only taken out for pedicures, trips to the beach, and the occasional run to the downstairs deli when I'm too lazy to tie on some sneakers. And they've never cost me more than $5. That is until I found a flip-flop that actually puts my legs to work. The Earth Company has developed a new technology in their footwear called Negative Heel Technology that makes your legs work extra hard when walking around, thus forcing your body to burn extra calories. I was certainly skeptical at first, but as soon as I slipped on a pair of their Breena sandals, I felt the balls of my feet being pushed backward as I walked, forcing me to make an extra push forward to keep going. It was actually kind of cool.

The Breena is made of leather straps and a silky suede footbed which makes them ultra comfortable to slip on, and disguises the fact that your legs are getting a workout. And anything that disguises a workout gets a big, fat gold star in my book.

Get Yours: zappos.com