Why Principia?

Established in 2017, Principia CrossFit is one of the fastest growing CrossFit gyms in Boise and Meridian. In 2019, Principia CrossFit became a finalist in the Best of Treasure Valley, earning Principia CrossFit the title of The Best CrossFit Gym in the Treasure Valley. Our motto, “An Object In Motion…” lays out our goal: we work to help people increase their functional movement so that they can continue to move throughout their lifetime.

Our program focuses on combining strength, cardiovascular endurance, and mobility to help you function at your peak performance every day.  All of the movements in our classes can be scaled to any ability level, meaning anyone can to CrossFit!  Just show up, and we will take care of the rest.  We offer specialized fitness regimes for beginner CrossFit athletes, to competitive CrossFit athletes, and everyone in-between. 

Our coaches are here to ensure our athletes are moving safely and efficiently, while providing encouragement and intensity to every workout.  At Principia CrossFit, we are more than just a gym; we are a community of athletes.  When you come in to workout, you will be greeted by friends who will encourage you and push you to accomplish more than you thought possible. 


I’m not in very good shape… can I do CrossFit?

Our programing is designed to be scalable to any ability level, which means anyone can do CrossFit.  Whether you are an elite athlete or someone who hasn’t been to the gym in years, you can walk into our gym and get a great workout that will meet you at your level of fitness.  CrossFit is for everyone, regardless of size, shape, or age.  Our members are everyday people that show up to push themselves, cheer on their friends, strengthen their bodies, and live a happier, healthier life.

What will my first time in your gym be like?

If you choose to start with a one-on-one, one of our awesome coaches will give you a tour of the facilities, we’ll sit down with you and discuss your goals, we’ll do a quick fitness assessment with you, and we’ll walk through what you can expect.

If you prefer to drop in on a class first, you’ll need to sign our waiver before jumping in on the action.  After you walk through the doors, you’ll see a place to store your stuff, and if needed, get changed into your workout gear.  When class begins, your coach will start by leading you through a warm-up as a group.  Then, the coach will guide you through the strength or skill session and the WOD (workout of the day).  CrossFit is known for its constantly varied, functional movements, but the coach will always explain and demonstrate the movements and how to scale those movements to your particular needs.

What do I bring?

We provide all the equipment.  Just come in workout gear that you can easily move around in.

What is your drop in policy?

We love nothing more than having visitors from other boxes come “throw down” with us!
If you are just passing through, we charge a drop in fee of $15  per class or offer a ten pack punch pass for $120.

It’d be great if you’d plan on arriving 15 minutes before scheduled class time so we can provide you with a waiver to sign and introduce you to our box.

Will CrossFit make me bulky or lose my gainz?

Many believe that CrossFit will make them lose their gains while others still worry it will make them bulky. In all reality, the program is designed for a fitter you. That means your body is going to go where the fitness takes it.  You will get stronger; you will also shed some fat.  But ultimately, your body will shift to it’s naturally healthiest place.

I have had a previous injury, can I still do CrossFit?

We always recommend you discuss any new workout programs with your physician. That being said, we do find that many of our members have successfully used CrossFit to help rehabilitate from old injuries. We focus on strength and mobility, and always scale movements according to your own limitations. If you do have any injury or limitation, please contact us prior to showing up to class to let your coach know. We encourage you to schedule a one-on-one session prior to you coming to class to go over the specifics of your injury and discuss how we can work through it together.

Principia CrossFit

If you are ready to start making changes and realize your potential, come join us!