Hello. While I do chest exercises the left chest muscle automatically contract a small rear delt muscle. For instance when I contract my tits while not making a excise I can feel the rear delt contracts to while the chest is bouncing. My doctor can’t help me out for about 2 weeks and I do want to deal with this problem now.
Any suggestions how to fix this?
If the problem is the muscle circled in the picture, it’s not the rear deltoid but the infraspinatus.
Yeah you are right. How do I stretch this muscle? 
[quote]Moggebig wrote:
Yeah you are right. How do I stretch this muscle? [/quote]
Sit down, place both hands on your waist with the thumbs facing your belly button, and the fingers will probably lay on the erector spinae. Lower the torso to the thighs and let the elbows basically hang downwards and you should feel a stretch.
How much is your push to pull ratio in the program you are following?