Tried a new biceps exercise this afternoon. It's called the underhand pulldown.
This exercise shortens the biceps by putting it in a flexed shoulder position along with a flexed elbow.
As your elbow is extended, the shoulder is flexed more, taking away the overstretch that can sometimes compromise the biceps muscle. This torched my biceps today and I think I will be using this exercise a lot in the future. I love the thought of growing in everything I attempt. Curiosity may be historically bad for cats, but it's a driving force behind human ingenuity and progress.