Our Team The Experts Powering Your Progress What started as a small studio has blossomed into a renowned fitness destination, attracting individuals from all walks of life who are united by a common goal. Darrell Steward CEO & Founder of MuscleUp Kathryn Murphy CEO & Founder of MuscleUp Mark Steward CEO & Founder of MuscleUp Floyd Miles CEO & Founder of MuscleUp Dianne Russell CEO & Founder of MuscleUp Esther Howard CEO & Founder of MuscleUp