Sure, you may feel like you're in better shape after a trip to the gym, but how do you quantify it besides stepping on a scale or breaking out calipers? Australian outfit mPort thinks it can do better. It's rolling out 3D body scanners at LA Fitness gyms and shopping malls across the US, giving you a more detailed look at your fitness. Effectively, they're infrared photo booths. Step inside (and strip down to your skivvies) and you'll get a virtual representation that gives clues to basics like your body mass index as well as harder-to-pinpoint factors like your body fat composition and hip-to-waist ratio. If you're improving your physique, you'll have concrete proof of it.