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.
There is a lower back muscle called the latissimus dorsi and your deltoids and trapezius make up your upper back. The deltoids are on your shoulder and your trapezius is the muscle on the back of your neck. There is a lower back muscle called the latissimus dorsi and your deltoids and trapezius make up your upper back. The deltoids are on your shoulder and your trapezius is the muscle on the back of your neck.