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With resistance band:
Hold the resistance band with both hands, palms facing up to ceiling. Hinge at the hips, slight bend in the knees and keep the back straight.. Imagine golf ball between shoulder blades to stop rounding of the back. Hold the resistance band at chest level. From there, keeping arms straight, open the arms outwards, then return back to start.
With weights:
Weights in both hands, palms facing inwards towards each other. Hinge at the hips, slight bend in the knees and keep the back straight.. Imagine golf ball between shoulder blades to stop rounding of the back. Place arms straight just ahead of the chest level. From there fly arms out to shoulder height, pinching the shoulder blades together. Then return the arms back to chest level. Repeat