This gym is amazing!! David is an excellent coach and you will have a workout that not only changes your body but your mind as well. I always leave after a workout and am so thankful for any time I spend at Karttia! Less

KarTTia has fitness for all ages. I am in my 60's and a nurse. I can work my 12+ hour shifts thanks to KarTTia. I see teenagers and members older, classes and personal training going on during the day. There is something for every person! Music and friendly people! Less

Shout to David and his team! Everyone hates mondays, but that’s hard to do when David’s spirit and high energy is how you start off your day/week. Always a much needed and welcomed jumpstart. Less

So much FUN!! I love the motivation from the coaches, the daily variety in the workouts, and the loud music that just gets you in the zone. Highly recommend. Less

I had a really good time here. It was fast paced, High Energy, Creative workouts, All year round. Great community overall would highly reccommend to anyone who's serious about getting in to shape and doesn't like huge gyms Less

I have been a member of multiple fitness centers during my 35 years plus in Jacksonville area. Without question, KarTTia Fitness is #1. Good for the beginner or dedicated athletic. Good fit for high school and college athletics, both male and female. Less

KarTTia is hands down the best gym I’ve ever worked out at! The workouts are creative, consistent, and challenging, and the coaches care about their members like no other! My husband and I were driving 30+ minutes one way every morning to attend. We have since moved from Jacksonville, but I still compare every group fitness workout to KarTTia. We saw great mental and physical results, and got an awesome community! Less