Mary Onyango isn’t just a celebrity trainer and coach at LifeTime NYC, she’s a game-changer, a visionary, and a powerhouse of possibility. Her name is synonymous with transformation, and her work is a masterclass in turning personal goals into powerful realities.

With over 20 years of experience, Mary has cemented her place as a leader in the fitness industry. She’s been featured on Life Time Digital, Shape Magazine, Women’s Health, ABC, Daily Burn, Life Fitness on Demand, and Equinox+, among many others. Her programs, like Aaptiv’s 90 Day Slay, Equinox’s Rounds and The Cut, and Daily Burn’s Inferno 17.5, go beyond sets and reps; they're immersive journeys designed to build confidence, resilience, and strength from the inside out.

Mary’s story is one of grit and determination. As a bodybuilding competitor, she’s no stranger to discipline, pushing boundaries, and rising to the occasion.

Mary is a firm believer in the symbiotic relationship between mental resilience and physical strength. Her guiding philosophy, "Train your body, train your mind," speaks to her understanding that true transformation happens when you master both. She’s not just here to help you change how you look; she’s here to empower how you think, how you move, and how you show up in the world.

As a mother to a sharp, witty, and determined teenage daughter, Mary’s life is a testament to balance and ambition. She leads with heart, showing her daughter and her clients alike what it means to pursue excellence while staying grounded in values and purpose.

Mary’s favorite quote by Nelson Mandela, "It always seems impossible until it’s done," captures the essence of how she approaches everything in life. Whether she’s coaching someone through a pivotal breakthrough, crossing her own finish line, or cheering on her daughter’s ambitions, Mary embodies the spirit of perseverance.

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Wallace