WHEN Gabrielle Lyon, DO, was 5 years old, her father would take her on 10-mile bike rides. Physical activity wasn't a question, she says—it was part of her day-to-day life from a very young age. As a ...

"In theory, doing weights first would put your body into aerobic mode [so] by the time you to get to running, you will already be in aerobic/fat burning state. So you may maintain [that aerobic state] ...