You’ve likely heard of the brain’s gray matter – here’s why the white matter is important too
The brain’s neural network, which includes both gray and white matter. Pasieka/Science Photo Library via Getty Images Christopher Filley, University...
Middle Age
50-year-old muscles just can’t grow big like they used to – the biology of how muscles change with age
Why is it harder to build muscle as you age? DjelicS/iStock via Getty Images Roger Fielding, Tufts University 50-year-old muscles...
Midlife isn’t a crisis, but sleep, stress and happiness feel a little different after 35 – or whenever middle age actually begins
When midlife begins can vary from person to person. Flashpop/Digitalvision via Getty Images Soomi Lee, University of South Florida Midlife...
