Recommendations: 2-3 Sets, 8-12 Reps
Sit on a chair. Raise your feet from the floor and hold them in front of you with slightly bent knees. Hold water bottles with a reverse grip in front of your shoulders (palms facing to the back). 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.