@called2 Honestly this isn’t what you’re looking for, but a plank. Correct form gets all areas of core and back and you can get down and hold it for 10 seconds at a time if you want
@truth_seekers If you have access to a cable machine there are great chest exercises that you can do that shouldn’t interfere. Try searching cable chest press and cable chest fly. You should feel it in the armpit when the chest is activated too