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Performance & Body Design exists to empower people to become the best version of themselves physically, mentally, emotionally, and to live a life worth telling about.


Our goal is to create a massive positive impact by giving back as a business, and through our clients as we help them achieve their goals while on their continued pursuit of personal growth and optimal self.


We are devoted to delivering the best customer experience by always providing sessions with great energy and enthusiasm that help educate, motivate and inspire our clients to their fullest potential.  We are committed professionals dedicated to changing the world, one life at a time, through health and fitness.

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Performance & Body Design, Kristin D Mercurio, Fitness Trainer,, 2019, Award, Certificate of Excellence
Performance & Body Design, Kristin D Mercurio, Fitness Trainer,, 2020, Award, Certificate of Excellence



Kristin D. Mercurio is a fitness trainer that has been helping clients achieve their goals for 14 years.  She has extensive experience working with a wide variety of clientele of all ages.  She specializes in weight loss, anti-aging, injury prevention, flexibility, corrective, functional & strength training, as well as performance-based sports training. She strives to keep her clients motivated by making workouts as enjoyable and fun as possible.

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AFAA: Certified Personal Fitness Trainer

AFAA: Certified Group Fitness Instructor (Early Adopter)

NASM: Certified Corrective Exercise Specialist

IYCA: Youth Fitness Specialist (YFS1)

IYCA: Youth Nutrition Specialist (YNS)

EasyFlexibility: Kinesiological Stretching Technique Certification 

FiTOUR: Myofascial Release Foam Roller Certification

Red Cross: Adult & Pediatric CPR/AED

Red Cross: Standard First Aid


Perform Better - Functional Training Series (3-Day-2009)

AFAA Practical Skills and Choreography

Powder Blue Productions: TurboKick Certification

Perform Better - Functional Training Series (3-Day-2010)

AFAA Prenatal Fitness

Perform Better - Functional Training Series (3-Day-2011)

Perform Better - Functional Training Series (3-Day-2012)

Perform Better - Functional Training Summit (3-Day-2013)

Perform Better - Functional Training Summit (3-Day-2014)

AFAA Yoga Essentials I

AFAA Yoga Essentials II

ACE Small Group Training Workshop

Perform Better - Functional Training Summit (3-Day-2017)

Jillian Michaels CEU Corner - Life Coaching

...More About Kristin

Kristin's Bio

Kristin is always finding new ways to challenge her clients and pushes them to new levels.  She encourages her clients to experiment with all realms of fitness through training techniques, classes, and events they have never done before.  Nothing is more exciting to her than preparing a client for a new fitness endeavor. She loves to challenge herself as well and is always training for a new or atypical event. Some of the events Kristin has participated in recently include The North American Wife Carry Championships, Sunday River's Mountain Epic Race, Hollis, NH Fastest 5K, Eastern States Half Marathon, The Key Bank Vermont City Marathon, Eastern States 20 Miler, and the Boston Marathon. She and her husband have hiked several of the 4000+ foot mountains in the White Mountains and are working on completing all 48 in NH. 


Fitness has always been a large part of Kristin’s life since she started training as an athlete at a young age.  She has been an avid skier/snowboarder her whole life, was a gymnast for 15 years, a competitive figure skater for 11 years and has 20+ years of experience on the ice.  While attending the University of New Hampshire, Kristin skated and competed with the UNH Ice Cats Synchronized Figure Skating Team. After transferring to Fitchburg State University she joined the dance club and participated in a number of different forms of dance from Ballet and Lyrical to Belly Dancing and Hip-hop. Concurrently over the past 20 years, she also explored a variety of outdoor sports including, Western and English Horseback Riding, Trail Running, Hiking, Rock Climbing, Snowshoeing, and both competitive XC and DH Mountain Biking.


In 2007, Kristin graduated with a Bachelor of Science Degree from Fitchburg State University. Since then she has been certified through AFAA, both as a Personal Fitness Trainer, Primary Group Exercise Instructor and early adopter of their NCCA Accredited Group Fitness Instructor Certification. She was also certified as a Powder Blue Productions: Turbo Kickboxing Instructor and was certified, shortly thereafter, by the IYCA as a Youth Fitness Specialist.  She has since completed coursework and earned her IYCA Youth Nutrition Certification as well as Easy Flexibility’s: Kinesiological Stretching Technique Certification. Kristin keeps current her CPR/AED and First Aid certifications, as well as the others, by taking numerous continuing education courses and attending conferences including the Perform Better Summit, in Providence, RI, from 2010-2014 as well as the most recent Summit in June of 2017. She has also completed NASM’s Corrective Exercise Specialist Certification and FiTour's Myofascial Release Foam Roller Certification.

Kristin D. Mercurio, 2010 Marathon
Kristin D. Dunbar Mountain Epic
Kristin D. Mercurio Hyannis Half
Kristin D. Mercurio Mt. Hale NH
Kristin D. Mercurio Boston Marathon
Kristin D. Mercurio Boston Marathon
Kristin D. Mercurio Finish at the 50
Mount Jefferson NH Kristin Mercurio
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