CoreStrong is the first and only studio in the Treasure Valley offering the Lagree Method on the unique and innovative Megaformer. Designed by celebrity fitness guru Sebastien Lagree, the patented Lagree Fitness workout integrates the key elements of resistance and counter-resistance in a sequence that allows for periods of zero gravity at peak muscle contraction. The workout strengthens the body, tones and elongates the muscles, improves endurance, jump-starts the metabolism, burns fat, increases flexibility and postural alignment, and restores the body’s natural balance…all done quickly and safely.

With no more than 10 clients at a time, CoreStrong is a class-based fitness studio, offering a non-intimidating environment and a workout unlike anything you have ever done before. Our teachers give you personalized and in-depth instruction, pay close attention to your form, and guide you through an intense and effective full-body routine. Your heart rate will increase, you will sweat, and your muscles will shake…

...that’s how you will get into the best shape of your life in only 40 minutes!

Lagree Fitness Testimonial

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And just like that, the ribbon has been cut! — - — - — - — - — - — - — Yesterday, @eaglechamber came out to our Eagle studio to celebrate with us! Having visitors in the studio was such an honor, sharing what we do and love so much makes for a very exciting day! • #ribboncuttingceremony #eagleidaho #corestrongeagle #lagreefitness #comecheckusout

Lululemon + Lagree • This morning these lovely ladies from @lululemon in the @villageatmeridian came to get their early morning sweat on at our Eagle Studio! It was a first for some and we were SO excited to have you all! We hope to see you back in the studio soon. • #lululemon #corestrongeagle #lagreefitness #megaformer #earlymorningworkout

TIME TO CELEBRATE, Mega style! • Corestrong Boise turns 1! Please join us on Saturday October 27th at our BOISE studio for mimosas, great food, and drawings to win a variety of prizes! There will be EXCLUSIVE offers only available at the party and live demos of new and challenging moves to come! • Bring your friends and family to enjoy a gathering to celebrate our ONE year anniversary, as well as the individual goals you have accomplished over the last 365 days. • This is a long journey we are on, and this milestone means so much to us all at Corestrong - thank you for standing by us and lunging with us for in our first year! Cheers to many more! 🥂 #oneyearanniversary #corestrongboise #comecelebrate #lagreefitness


599 S. Americana BLVD. Boise, Idaho

3210 Chinden BLVD. STE 115 Eagle, Idaho


  • CoreStrong Studio
  • (208) 336-0115