APS member and astronaut Jessica Meir, PhD, works in a microgravity environment on the International Space Station. Credit: NASA If I asked you where is up and where is down, you would most likely be able to identify it. This is because the Earth’s gravitational pull on your body makes it easier for you to … Continue reading What Happens to Astronauts’ Bodies in Space?
When young people think about their muscles, they often focus on enhancing their muscle size and strength for cosmetic or athletic reasons. Those older than 50, however, need to be more concerned with just keeping the muscle they have. On average, people over the age of 50 lose 1 to 2 percent of their muscle … Continue reading Why Does Muscle Matter?
We all know the saying “use it or lose it.” Your muscles and nerves are no exception. When people are not active, whether it’s because of bed rest, spinal cord and nerve injury, or other reasons, two big problems arise. First, the muscles shrink by losing protein (a state called atrophy). Second, nerve cells have … Continue reading What Animals Can Teach Humans about Muscle Maintenance