Fit&Well favorite Cecilia Harris, a certified personal trainer and co-founder of the RWL wellness app, specializes in midlife strength and hormone-smart training for women. At 54, she exercises for longevity, prioritizing strength training three times a week combined with daily steps, Pilates, and mobility work.

"I don't train for aesthetics alone. I train for bone density, muscle mass, metabolic health, confidence and independence," Harris says. "I want to be strong enough to carry shopping at 80. Maintaining muscle in midlife is hard enough—that's the real goal." Her workouts are efficient, lasting 30-45 minutes, as she believes focus and consistency matter more than duration.

Her weekly routine includes lower-body and upper-body strength sessions, Power Pilates, incline walks, a full-body circuit, and a long weekend walk. She trains early to ensure it gets done but advises the best time is the one you'll stick to.

Harris's top tips: 1) Make exercise a non-negotiable habit, like brushing your teeth. 2) Everyone over 40 should be strength training to protect bones and metabolism, focusing on smart programming over just heavy weight. 3) Track your progress to see improvements, understanding that fitness after 40 is a sustainable lifestyle, not a short-term project.