Informative vid. It makes sense to me about your upper back. Doing a lot of pulling with your arms when your back is bent, definitely puts strain on your upper back, I know that for a fact. Keeping your back straight and pulling seems to much distribute the stress over wider and cumulatively...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.