"Try these variations of the I-T-Y exercises by threading a resistance band underneath of a bench.
These exercises will help strengthen the muscles of scapular retraction and can serve as a great compliment to a strength training routine.
Experiment with different climbing-specific arm positions as shown here:
1️⃣ Prone ’T’
2️⃣ Alternating Prone ‘X’
3️⃣ Alternating Prone Offsets"