Researchers found that measures of his heart health, muscle mass, and overall fitness were more comparable to a healthy 30- or 40-year-old than a nonagenarian. Here are the six factors found in the case study that may have helped him to be fit and healthy in his 90s. That's almost perfectly aligned with what doctors and exercise scientists recommend for cardio training to improve longevity, endurance, and all-around performance. Get enough proteinThe case study researchers that in addition to exercising regularly, Morgan also had a high-protein diet, eating about a gram of protein per pound of his body weight each day. Physical changes related to diet and exercise take time, whether that's building muscle, burning fat, or improving your health.

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Persons: —, Richard Morgan, Morgan, Morgan Busko, It's, Jamie Grill, Morgan didn't Organizations: Service, Business, Washington Post Locations: Ireland