Mon-Fri: 5am-9pm | Sat-Sun: 7am-6pm location285 Nicoll Street, New Haven, CT 06511 tel203-936-9446

Our Professionals

Pablo Perez

Pablo Perez

Co-Founder

“My passion is to deliver an exceptional experience for our members.”

Pablo lives in New Haven with his wife and daughter. He comes to mActivity with 10 years’ experience in the fitness industry as the owner of Core Fitness. His background also includes working in sales for Aetna, IKON office solutions, and as a paraprofessional for Urban Youth Elementary in New Haven. He earned a Business Degree at the University of Connecticut where he was an All-American rugby player. He spent years playing for teams in San Diego, New York, New Zealand and New Haven.

Notre Dame High School, West Haven CT
University of Connecticut, Business

Burch Valldejuli

Burch Valldejuli

Co-Founder

“Imagine an inviting space to steward and enrich your physical health…That’s mActivity”

Born and raised in greater New Haven, Burch comes to mActivity from a 30+ year career in research and research administration, most recently as the Director of Program Development at the Yale School of Public Health. She is committed to improving both individual and community health. She is an avid cyclist and loves hiking and paddling with her family in the woods of Upper Peninsula Michigan.

Hopkins School, New Haven CT
B.A. Psychology and Women’s Studies, Goucher College
Ed.M. Counseling and Consulting Psychology, Harvard Graduate School of Education

Sergio Muñoz

Sergio Muñoz

Fitness Director

“I started my journey to fitness at the age of 12 practicing Martial Arts and gymnastics and competing in my first national Karate tournament at the age of 13 and becoming a Karate instructor at the age of 15.”

Born in Chile, Sergio immigrated to the USA to attend college. Sergio has worked as a personal trainer for 13 years. His National Academy of Sports Medicine (NASM) Certifications include: Master Elite Certified Personal Trainer, Fitness Nutrition Specialist, Neuromuscular Stretching, and Optimal Performance Training for Seniors, Youth and Prenatal Clients. His other certifications include: FMS Functional Movement Screen, DeFranco “CPPS” Certified Physical Preparation Specialist, Activated Isolated Stretching: The Mattes Method, Erick Dalton Myoskeletal Alignment Techniques, and TRX Suspension Training. While living in California Sergio was an avid athlete, he passionately practiced martial arts and enjoyed outdoor activities such as mountain biking, rock climbing and rollerblading. He has devoted his life to fitness. He is also bi-lingual English and Spanish

National Karate Champion, Chile
Trained with the Head Coach of the USA Olympic Tae Kwon Do Team
B.A. University of California, Davis: Psychology & Communications

Dave Butler

Dave Butler

Coach

“I always challenge myself to achieve my goals and will help you achieve yours too. “

Dave is a National Academy of Sports Medicine (NASM) Certified Personal Trainer, Functional Movement Systems Level 1 trainer, and TRX instructor with over 25 years of experience. He has worked with everyone from children to the elderly, nationally ranked athletes to armchair quarterbacks, those trying to lose weight to those trying to bulk up. All have benefited from his depth of knowledge, gentle encouragement and high energy level. Dave has participated in sports his whole life including 12 years of competitive swimming, 3 years of track & field and 2 years of USCF cycling. He has also participated in triathlons more recently, Dave has taken up racing marathons. As a competitive athlete, Dave has placed top 3 in several races in the last few years.

B.S. Human Performance, Southern Connecticut State University, concentration in Nutrition