It's Fitness Friday! Here's a fun 5 exercise circuit (10-15 min) that you can do at home to help tone up and get rid of the flab under your arms. Did you know that the skin that hangs down under your arm is actually called (in slang terms) the "Reverse Bicep"? Funny... Some people have a lot of time on their hands to think up things like that... :-) Go ahead and take a look!