'Train Like a Martian' Challenge Inspires Kids to Get Active

Space is harsh on the human body, especially when astronauts go to extremes, such as spending months on the International Space Station — or taking a future trip to Mars. The nonprofit group The Mars Generation (TMG) is inviting children (and adults, too) to "Train like a Martian" between April 18 and April 24. The initiative is inspired by NASA's "Train Like an Astronaut" program, which encourages physical activity among children by comparing it with astronaut training.