As I walked into the supermarket yesterday, bombarded with chocolate Easter eggs and being (what some people would term) a chocoholic I dig deep, very deep resisting the temptation to buy the whole display! (healthtalkwomen.com)
Keuchle et al (2000) reported that the pectoralis major as a whole displayed an average moment arm length ranging from 12.2 mm to 18.4 mm depending on joint angle range of motion and plane of movement. (strengthandconditioningresearch.com)