Mariana Goncalves
CrossFit Level 2, Owner

Mariana founded CrossFit Kryptonite in 2010 and has been an advocate of health, fitness, and clean eating her entire life. She holds CrossFit Level 2, CrossFit Kettlebell, and USAW Level 1 Weightlifting certifications. Mariana placed 25th, 28th, and 54th in the world during the 2012, 2013, and 2017 CrossFit Open, and she took first place in the Nor’Easter Master’s Competition hosted by Reebok CrossFit One in 2013.

Javier Aponte,
CrossFit Level 2

In addition to his CrossFit Level 2 certification, Javier is certified in CrossFit Kids, Kettlebell, and Striking.

Kelly Daugherty
CrossFit Level 2

Kelly started her CrossFit journey by walking into Kryptonite in 2010. Eager to try something new, she signed up. A few years in, Kelly loves working hard, pushing herself, and encouraging others to do the same. Don’t be afraid to try something new!

Janel Duffy
CrossFit Level 1

Janel has been a local competitor in numerous competitions on Long Island, Connectivity, and New York City. She loves the community aspect of CrossFit and is excited when helping new members feel comfortable and reach their untapped potential. Janel did CrossFit throughout her pregnancies and feels very comfortable making workouts and movements accessible for people across the spectrum of their fitness journey.

Don Fox
CrossFit Level 1

Don started CrossFit in 2017 and enjoys the challenges of improving his overall fitness and learning the various skills for the workouts. He became a coach because he wants to help people learn how to move better, feel better, and be better. His favorite workouts include the Olympic lifts, intense cardiovascular work, and chipper-style WODs.

Sarah Goncalves,
CrossFit Level 1

In addition to her CrossFit Level 1, Sarah is a NASM-Certified Personal Trainer and USAW Level 1 Weightlifting Coach. She started her CrossFit journey in 2010 and has experience coaching CrossFit group and introductory classes, as well as one-on-one coaching sessions. She is also certified in CPR/AED. Sarah has competed in several local competitions across New York and New Jersey.

Mike Griffiths
CrossFit Level 1

Mike has been a part of the CrossFit Kryptonite coaching staff for many years. He is also a seasoned competitor, having participated in various local competitions and taking 13th in the 2017 Granite Games.

Marcus LaPiana
Personal Trainer

Marcus is a certified yoga instructor, personal trainer, youth fitness trainer, and exercise therapy trainer. He also specializes in fitness nutrition and is CPR/AED-certified. Marcus has several competitions under his belt, including the 2014 Triton Games, where he took 3rd place.

Matt Pirozzi
CrossFit Level 1

Matt is a seasoned coach, programmer, and local competitor. He has participated in many local competitions over the years, including the 2017 Granite Games with Coach Mike.

Kris Reene
CrossFit Level 1

Kris is a big advocate of health, fitness, and the community aspect of CrossFit. He is also a firm believer in the CrossFit methodology, including its varied programming and nutrition recommendations to support a healthy lifestyle.

Desiree Schneyer
Bootcamp Instructor

Desiree has been a member of the CrossFit Kryptonite community for many years, first as a gym member and now as our “Krypto Kamp” bootcamp instructor.