I have used papain with some marinades for goat meat. Personally I do not care much for marinades any more, at least not long ones. For example, I used to marinate chicken overnight with spices and yogurt when making chicken tikka or tandoori chicken.
1 Pain at the base of the spine causes the psoas muscle to shorten and weaken(1,2,3,). 2  80% of Western people will suffer from debilitating backpain some time in their lives(5).  Western style walking (comfortable shoes & flat ground) fails to trigger muscles that stabilize hip joints & lower back.
The coracobrachialis starts on the front of the shoulder joint and stretches out to the upper arm bone. Conjointly, the these two muscles assist the latissimus dorsi in shoulder adduction during the pull up. This action moves your upper arm bone in, and lifts your body up to the bar. Long Head of the Triceps. The triceps muscle is made up of three heads: lateral, long and medial.