Astronauts less likely to faint on Earth if they exercise in space 

With the 50th anniversary tomorrow of the first moon landing, space is on everyone’s radar, including here at Morning Rounds. One studyfound that astronauts returning to Earth were less likely to faint if they exercised while in space. We’ve all experienced that sudden dizziness after standing up too quickly, and astronauts are especially prone to that feeling given the difference in gravity back on the ground. A small group of astronauts spent up to two hours everyday during their six-month stay on the International Space Station doing resistance and endurance training. They also received a saline infusion upon landing to prevent dehydration. None of them fainted within the first 24 hours of returning to Earth. The findings could help plan for future human space travel or even help those who have to adjust to being active after a prolonged period of bed rest.