Our Experts
Sarah Collins
Sarah Collins created Upside because she lived it. As a seasoned C-suite executive, certified yoga instructor, and executive leadership coach, she knows firsthand that true leadership requires more than strategy—it requires energy, balance, and well-being.
Her own transformation, which included losing more than 100 pounds, taught her that prioritizing health is not a luxury but a leadership necessity.
Professionally, Sarah has spent years helping organizations scale by strengthening their leadership teams and building people strategies and programs that unlock growth. She specializes in guiding executives through the complex challenges of aligning talent, culture, and structure with ambitious business goals. Whether designing leadership pipelines, facilitating executive offsites, or implementing programs that elevate employee engagement, Sarah has consistently helped companies grow stronger from the inside out.
Upside brings together the full arc of Sarah’s expertise—strategic leadership, organizational development, and personal well-being—into a single integrated experience. With Sarah’s guidance, leaders don’t just succeed in business; they scale sustainably, create resilient teams, and thrive in life.
Jen Margolis
Jen helps leaders and teams build clarity, connection, and capacity for meaningful impact. As an executive coach, organization consultant, and facilitator, she brings more than two decades of experience helping leaders, teams and organizations grow with purpose and navigate complexity with confidence.
Blending organizational design, leadership development, and positive psychology, Jen partners with leaders to align vision, structure, and culture with the psychology of doing good work, resulting in grounded, meaningful action. Her evidence-based approach equips leaders to navigate the complexities of their work, deepens team engagement, and creates healthier, more connected, purpose-driven workplaces.
Before founding Amberwood (her own practice), Jen worked in boutique consulting firms with non-profit, government and corporate clients, led cross-cultural learning programs for international professionals and worked as social worker.
She holds graduate degrees in Social Work and Positive Organization Development , a Certificate in Positive Psychology, is a PCC-level certified coach through the International Coach Federation and a certified yoga instructor.
Our Well-Being Experts
Ylonda Rosenthal-Greene, Owner and founder of Soul Yoga OHC
Soul Yoga OHC is a transformative community space dedicated to redefining how yoga is taught, practiced, and shared. With over 15 years of experience as a yoga educator, sound practitioner, and social justice advocate, Ylonda blends dynamic, beat-driven flows with grounding, meditative practices that often incorporate live electric cello, singing bowls, and mantra. Their teaching is rooted in the belief that yoga is a powerful tool for self-discovery and collective liberation, designed to be accessible and deeply meaningful for all people.
Jackie McNamara, CEO of Theory of Me
Jackie is a strategist and facilitator who blends the science of well-being with the art of collaboration to help people and organizations thrive. A former Division I athlete and longtime coach, she’s passionate about sustainable behavior change and high performance—on and off the field. As CEO of Theory of Me, Jackie has partnered with more than 250 organizations to design programs that transform health, culture, and everyday happiness.
Kylene Bogden, RDN
Kylene is a Registered Dietitian Nutritionist working with the Cleveland Cavaliers and founder of FWDfuel Sports Nutrition. Her career began in conventional nutrition, but her own experience as an athlete revealed how dramatically food affects energy and performance. Over the past decade, she’s blended sports and functional nutrition to help thousands—from elite athletes to everyday performers—transform their health, energy, and longevity.
Chuck Collins, Functional Fitness Coach + Founder, Fitness 4:13
With more than 20,000 hours of personal training experience, Chuck Collins brings unmatched expertise and care to every session. As Upside’s lead personal trainer, Chuck designs each workout to meet you where you are in your fitness journey—helping you build strength, resilience, and confidence that lasts.
Grounded in functional fitness, Chuck’s approach is deeply personalized, focusing on movement that supports your real life and leadership, improving energy, mobility, and performance over time.