Band Pull-apart’s are an amazing rotator cuff warmup, and will also correct an imbalanced posture.
These are one of the best corrective exercises for posture alignment and strengthening the mid back.
Rows are great at developing a strong back, which will also help fix forward rounded shoulders
Chest Stretch - Find a door way or corner wall, raise your arm up to 90 degrees, hold for 30s/side
Posture effects not only our performance, but our energy levels, confidence, and freedom from pain.