Get ready for the gun show! Kelsey brings you an intense upper body and core workout that combines curls, chest flies, shoulder presses, and tricep work with targeted core circuits. This workout uses multiple dumbbell sets for progressive overload - you'll start with lighter weights for longer intervals (45 seconds), then switch to heavier weights for shorter bursts (30 seconds). The format keeps your muscles challenged while preventing burnout. Equipment needed: Mat, multiple sets of dumbbells (heavy, medium, light - Kelsey uses 5lb, 8lb, 10lb, and 15lb weights)