Homer provides a warning about RAS and I'm going to pass it on. In 7-19 when discussing RAS Homer warns the Hitter. "But with the Axe Handle procedures there must be a straight line piston to avoid injury of the right elbow ligaments. So, if there is a twinge in the elbow, you are Swinging the Right Arm."
In laymans terms this is called Golfers Elbow (medial epicondylitis) and it is similar to Tennis Elbow but located on the inside of the forearm rather than the outside. Its not as common as Tennis Elbow but common enough that there are Doctors offices busy treating this condition.
I'll leave you with a link but do a google search and you'll come up with plenty of information.