No weights? No problem. Grab two 1–2 liter water bottles and follow this rapid circuit to target your deltoids, triceps, and upper back in record time.
1. Lateral Lifts

Stand hip-width apart. Raise bottles to your sides until shoulder height, then lower slowly. Keep elbows slightly soft.
2. Triceps Kickbacks

Lean forward, elbow bent. Extend your forearm backward until the arm is straight. Only move from the elbow down.
3. Butterfly Back

Hinge forward, bottles in front of chest. Pull arms back sideways to shoulder height, squeezing your shoulder blades.
⚡ The 3-Minute Protocol
Perform 10 Repetitions of each move back-to-back.
Complete 3 Sets total for a full 3-minute burn.