HistoryCrucible was established to be the best kettlebell and bodyweight conditioning school in DFW.SpecialtiesCrucible Kettlebell Club is Plano's best Kettlebell training facility. All of our instructors are certified HKC or RKC. Our programs are designed to build functional strength: Primal Move (FMS) - Functional Movement program designed to make you move better. Bodyweight Conditioning - Build functional strength quickly and safely. TRX - Assisted bodyweight conditioning. Hardstyle Kettlebell - Strict form driven kettlebell training developed by Pavel. These classes are taught in small group formats, and allow students to grow at their own rate.