Olympic gymnast Nastia Liukin is balancing, leg yanked up, while helping to save the planet. The 31-year-old dedicated her Monday Instagram update to sustainability, although the post likely wouldn't have had much of an impact without the five-time Olympic medalist stretching her jaw-dropping body. Nastia, followed by 1 million and fresh from updating right from an airplane, was proving that she cares about her carbon footprint. Likewise, that retiring aged just 22 back in 2012 doesn't mean the skill-set is lost. Check it out below.