Gabby Landsverk

Intermittent fasting is popular among successful people for weight loss and longevity but experts say it can backfire. Here's what we know.

Andrea Pence said eating more protein helped her lose 140 pounds. She said she didn't cut out treats but found some healthier swaps and focused on high-protein meals.

The Mediterranean diet offers healthy snacks to eat instead of processed food, a dietitian said. Snacks like string cheese and Greek yogurt provide protein to keep you full and energized.

A professional dancer and Miss America contestant uses barre and walking to stay lean and fit.

A professional dancer said crunches are her go-to move for a strong, toned core. She recommends an easy way to tell if you're doing them right.

Shirley Chock said tai chi techniques helped her reduce stress and improve her focus as a financial analyst.

Former financial analyst Shirley Chock said tai chi helped her thrive in a career prone to burnout.

Former Miss America contestant and professional dancer Madeline Collins said crunches are her go-to ab exercise, but only if done correctly. Courtesy of Madeline Collins

NSYNC member Lance Bass said boyband lifestyle took a toll on his body, and he has since been diagnosed with diabetes.

A study of 24,109 men found low testosterone linked to a higher risk of early death. The findings suggest the hormone is an important indicator of health and longevity for men.