Recommendations: 2-3 Sets, 8-12 Reps
Kneel on the floor, with your upper body upright. Hold water bottles with an overhand grip in front of your shoulders (palms facing to the front). This is the starting position. Keeping your shoulders down (do not shrug them), press the bottles straight up. Exhale during this movement. Lower the bottles slowly to the starting position. Inhale during this movement. Repeat for the required number of repetitions.