The North Shore’s #1 Gym for North Shore CrossFit Group Training, Personal Training & Middle & High School Athletic Training



The gym is your platform to do great things in life.

Since 2005, we have helped more than 10,000 people begin their fitness journey by providing a forum for learning the foundations of fitness in order to live a healthier and more active lifestyle. Our coaches will develop customized programming in order to help you learn, adapt, and to reach your goals. Whether you’re looking for muscle building, weight loss, athletics, lifestyle coaching, and any other event based training. We offer a solution just for you—and we’ll be cheering you on every step of the way!

North Shore CrossFit Group Training

Workout in a group setting with one of our coaches. From Power & Strength to Skills & Conditioning, the group has you covered.
Classes can work for anyone, regardless of
where you’re at on your fitness journey.

Personal Training

& Semi Private Training

Personalized coaching is the best option to reach any goal; from losing weight, building muscle, refining a skill, or sport specific training. Our Personal Training programs are aimed at your own unique needs with a dedicated coach, just for you.

MIddle & High School

Athletic Training

When you are not in season it is time to make athletic improvements. Use your time wisely. 


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from our members

Testimonials

When l joined Treehouse, I was over 300 pounds and looking to get fit but did not have much lifting experience. After attending about four classes a week for the last two years, I have dropped over 85 pounds and can physically do things I did not think I would expect be able to do: pull-ups, stretches, clean and jerks, the list could go on and on. Not only do they work on physical fitness, but also mental fitness as well. No matter what level of fitness l was at, the coaches and other members always made me feel included in the Treehouse community.

Alan DeLorenzo

When I came to Treehouse School of Fitness, I had no idea what the Treehouse was about, or if it was something I would enjoy, all I knew is I was in the worst shape of my life and I needed to do something. I called and got an appointment to meet with Mark. The first day I met Mark, we did a simple walk through of the gym and then a test of my basic abilities. I couldn’t do a single sit up, I was shaking like a leaf for half a dozen push-ups, couldn’t run 200m without running out of breath, I was totally embarrassed. Mark was so encouraging, he made me feel like I was successful and that it wasn’t as bad as I thought. Over the next 6 weeks we worked together through the fundamentals. There were so many days that I wanted to give up, and he’d keep telling me that “there will come a time when this will be the best hour of your day” and I’d tell him, “you’re crazy!” Fast forward 8 months, and I can do a lot more than one sit up, and I look forward every day to that one hour I spend with all the guys and gals at Treehouse. Marks prediction came true and now it truly is the best hour of my day. The community feel that the Picardy’s have created, the entire staff and the other members of Treehouse have had such a positive impact on my life. What I realized is there is no need to be intimidated.

Mike Waugh

Dave and his team are absolute fitness professionals. I’ve been to a million gyms as both a member and an instructor. Dave’s team is constantly pushing themselves to learn more and provide better for their clients.

Jake Crandall

I started at NSCF/Treehouse Athletics in April 2015 and after I experienced my first (fun, albeit difficult) workout, I knew this was for me. These Coaches genuinely care about each person that walks into the gym-and they all live up to their motto– Coaches for life! I get stronger every day and I am proud of myself for what I have accomplished.

What I realized is there is no need to be intimidated. You are there for YOU and to better yourself! All workouts can be scaled or modified to fit your abilities. All members encourage and cheer each other on—we are all there to improve our health and quality of life. You really won’t find a better group of people; this is a true community and no other gym compares!

Janice G.

Why Treehouse featured image

Why Treehouse

Proper assessment and an individualized game plan from our personal trainers will help you stay focused on your own unique goals. Treehouse will help you become the best version of yourself possible with programs designed 100% around you.

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Latest Posts From Our Blog

Education and coaching that goes beyond workouts. Read our articles about overall wellness, nutrition, recovery, building healthy habits, and how to develop an active lifestyle in our blog.

Neil’s Meals: Simple Veggie Prep

A simple veggie roast that you can add to your daily meals as you go. If you’re prepping proteins as well you can throw these two together at anytime and you’ve got a meal! Items needed: 1 Sheet pan/Cookie Sheet etc Veggies of choice (Here we have cherry tomatoes, zucchini red onions and bell peppers!) 1-3 TBS of Oil of choice (suggested olive or avocado) Seasonings: oregano, garlic powder and some salt and pepper Directions: Preheat… Read More

Will Lifting Weights Make Me Bulky?

This is a question that we come across often when discussing exercise prescription for a client. Usually the question is posed by a woman, but not always. When asked this question, usually the picture one has in her head is such as to the left. (photo courtesy of femalemuscleguide.com) My immediate response is that it depends. This response either provokes curiosity or frustration from the client. I can understand those emotions because so much information… Read More

Chronic Inflammation Tips

Get Inflammation Under Control Chronic inflammation has been shown to be the root cause to many serious medical conditions. This includes, cardiovascular disease, cancer, asthma, diabetes and autoimmune diseases. In addition to all of this, chronic inflammation makes you more vulnerable to viruses such as COVID-19, the flu, and the common cold. Guess what! You can have a dramatic influence in dialing that inflammation back and restoring some balance. Here are some tips… FOOD –… Read More