Mariana Goncalves, Owner, Level 2 Trainer

Mariana is a lifetime advocate of fitness and healthy eating.

  • CrossFit Kettlebell Certification
  • CrossFit Olympic Lifting Certification
  • 2012 Reebok CrossFit Games Open, Master’s division, 25th place world wide.
  • 2013 USAW Level 1 Sports Performance Coach
  • 2013 NorEaster Masters Champion, 1st Place
  • 2013 Reebok CrossFit Games Open, Master’s division, 28th place world wide.
  • 2017 Reebok CrossFit Games Open, Master’s division, 54th place world wide.


Matt Pirozzi, Level 1 Trainer, Gymnastics Coach

Coach Matt has been a lifelong believer in health, fitness, and being active. He played baseball and soccer competitively in high school and went on to play Division II Soccer in college. Although he continued to be involved with soccer outside of college; coaching JV and Varsity teams as well as participating in local soccer leagues, Matt still looked for a sport that would challenge him as an athlete and a competitor.

Matt began doing CrossFit with Coach Mariana in 2010 and has evolved from just a soccer player into a well respected CrossFit athlete and coach. Just a year after starting CrossFit Matt began competing. Within the last three years Matt has done numerous competitions and has placed top ten in all of them. Matt competes yearly in the Reebok CrossFit Open and has made great improvements each year. Matt officially received his CrossFit  Coaching certification in 2012 and his CrossFit Gymnastics certification in 2013. Matt likes to coach a wide range of athletes, from brand new CrossFit members to elite competitors, including a 2014 Regionals Athlete and a three-time CrossFit Games Masters Athlete. Matt enjoys seeing the success of all the athletes he coaches, whether it be a first pull-up or a 300 lb. back squat.

You’ll usually find Coach Matt in the gym moving around some heavy weight, working hard, and motivating our members to strive for their best.


Javier Aponte, Level 2 Trainer

  • CrossFit Kids Certification
  • CrossFit Kettlebell Certification 
  • CrossFit Striking Certification


Sarah Goncalves, Level 1 Trainer

  •  USAW Level 1 Sports Performance Coach


Marcus LaPiana, Level 1 Trainer

In addition to having his level one CrossFit certification, Marcus is certified in personal training, fitness nutrition, and youth fitness.

  • 2014 Triton Games, 3rd place
  • 2015 Reebok CrossFit Open, North East, Master’s division, 44th place


Samanatha Bisagni, Nutrition Advisor

Samantha Bisagni is Kryptonite’s in-house Nutrition Advisor. It wasn’t until she started taking a holistic approach to her health that she realized the HUGE role nutrition plays. Her main goal is to pass along what she has learned and help those who are interested in bettering themselves through proper nutrition and a healthy lifestyle. She’s a firm believer in using food as medicine; we are capable of preventing so much by changing the way we eat.

Samantha completed the Dietetic Technician Program at Suffolk Community College and plans to continue on to become a Registered Dietitian with a focus on integrative and functional medicine.



Mike Griffiths, Level 1 Trainer

Mike, also known as “RKG” got his L1 certificate in 2015 at CrossFit Mayhem. He thinks of himself as a semi-pro exerciser, although Coach Matt would say otherwise. His greatest achievement was first loser at the 2016 Tribal Games in Riverhead, NY. In high school, Mike played golf and baseball and ran winter track. He received his undergraduate at SUNY Cortland in Physical Education in 2016. Over the summer, Mike is an ocean lifeguard for the Town of Southampton.

Other than working out, Mike likes to use his fitness to be active and compete in the Annual Peanut Butter Sculpture Challenge in Minnesota.