Andrea leads an upper body focused workout featuring tempo changes to maximize time under tension. The session begins with a quick bodyweight core circuit including Superman variations, bird dogs, and side planks, then progresses through two complete upper body dumbbell circuits. The first circuit uses single-arm exercises with slow 3-count descents, while the second circuit increases intensity with bilateral movements and even slower 6-count eccentric phases. This slow eccentric training approach is particularly effective for building strength with lighter weights and is ideal for those managing injuries or seeking workout variation. Equipment needed: Light, medium, and heavy dumbbells (Andrea demonstrates with 5, 8, 10, and 12 lbs), exercise mat (shoes optional)