It’s lunchtime, your friend checks their Fitbit with a smug grin—12,000 steps already—while you wonder if your 3,200 even count. Most of us have heard the “10,000 steps a day” rule. But that number ...

Scott Rider of South Carolina is one of over 1 million people in the United States with Parkinson's disease. Working closely with his care team, he decided on ...