Michal Sieroslawski is an Entrepreneur, Exercise Physiologist, and Personal Trainer

Michal Sieroslawski is a Polish-born digital Entrepreneur, exercise physiologist, and personal trainer. He began his personal training career in 2012 and holds a degree in Sports and Exercise Science from the University of Central Lancashire. He served as an exercise physiologist within the National Health Service and later held the position of fitness director and exercise physiologist at Canyon Ranch. Michal Sieroslawski worked aboard the Carnival Valor, Carnival Elation, Oceania Insignia, Oceania Riviera, Celebrity Summit, and Celebrity Eclipse, and he trained clients as a personal trainer at Virgin Active. He hosts the Walk a Mile podcast.

During his eight years at sea, Michal sold more than a thousand insoles and personally fitted over a thousand customers representing more than 70 countries. He relied on computerized footprint and gait analysis to assess each customer, measured the foot from the ball to the metatarsal arch, and based arch support sizing on the resulting footprint. Michal Sieroslawski conducted balance assessments by having customers resist pressure with their hands, then finished each fitting with a walking test inside the customer's own shoes.

Michal Sieroslawski collaborated closely with chiropractors, osteopathic doctors, doctors of acupuncture and Chinese medicine, physiotherapists, and massage therapists, drawing on their input to refine his fitting approach. Michal addressed conditions ranging from plantar fasciitis, heel spurs, and metatarsalgia to overpronation, flat feet, neuropathy, and diabetic foot pressure. He fitted insoles into nearly every category of footwear, from running shoes and work boots to dress shoes, hiking boots, and orthopedic shoes.

His career has kept him on his feet for long stretches, moving between training sessions, appointments, and fittings throughout the day. That routine sharpened his attention to gait, posture, balance, and how people load their feet during everyday movement. He has watched people walk, squat, run, and lift across every age group, fitness level, and occupation, and he uses those observations to judge how footwear actually performs rather than how it looks.

Michal Sieroslawski evaluates support by its behavior over a full day, not by first impressions. He notices when an insole holds up during standing, walking, commuting, and exercise, and he distinguishes between products that merely feel good on first wear and those that hold their shape after eight hours. His background in exercise science, paired with years spent fitting real people in real shoes, gives him a practical, skeptical approach that favors measurable comfort over marketing claims.