Absence makes the heart grow fonder. It's deep summer, and time to leave the Room & Board catalog behind, slam the screen door, and do cartwheels across the nearest lawn. Social Workout, Apartment Therapy's health-conscious cousin, has partnered with mega-site EveryDayHealth.com to concoct the 14-day 'I Heart Summer' Slim-Down Challenge kicking off this Monday. Upwards of 2,000 people have thusfar committed to eat healthier, spend less time in front of their various screens, and to get outside and be active. Why join them? We're talking massive outpouring of group support for your long-suffering body! This thing could turn your summer from muggy to memorable. Also, on offer are a slew of prizes, including a complimentary one-on-one with a certified nutritionist for everyone who finishes the challenge. Grab a friend, and come along. You can sort out the living room post Labor Day.