Pump it up! 💪 Did you know that along with conducting science experiments on the International Space Station, NASA astronauts also workout two hours each day? Find out what tools help them train so that we can research how to keep astronauts healthy during spaceflight, when they set foot on the Moon or Mars, and when they return to Earth. --> https://go.nasa.gov/3K8xIzN | NASA's Marshall Space Flight Center