At Substance Fitness - Newport Beach Costa Mesa, we provide men, women, and teens of all abilities with high-level instruction. Whether that is through group fitness, high-intensity interval training (HIIT), TRX, or cardio and kickboxing, we will live, love, work, and sweat together. This is not a big-box fitness center; it is a community-oriented gym in Costa Mesa, CA. That's why you will never have to wait long for equipment. Our space is always clean. Try a class today!