Exercise is an important part of the daily routine for astronauts aboard the International Space Station to prevent bone and muscle loss. On average, astronauts exercise two hours per day. The equipment they use is different than what we use on Earth. Lifting 200 pounds on Earth may be a lot of work. But lifting that same object in space would be much easier. Because of microgravity, it would weigh much less than 200 pounds there. That means exercise equipment needs to be specially designed for use in space so astronauts will receive the workout needed. Credit: #iss #exercise #astronauts #workout #healthy #lifting #journeytomars #nasa #microgravity #space