Scientists believe that speaking a foreign language exercises the brain and provides the mental stimulation needed to prevent cognitive decline. Unlike other factors that are thought to protect ...

But what's behind her mastery? Is it her build, the years of training she's put in, or... her brain? Follow BI Video: On Twitter More from Science Simone Biles is an extraordinary athlete.

It’s also likely that having kids might make you more physically active, have healthier habits and engage in more mental ...