got it, long head of the brachialis, which makes sense… the weirdest thing, it started growing like crazy a month ago, I was wondering what the hell was happening lol. A nice muscle add-on overall ; )
so who do I send the cookie too? lol[/quote]
No mate. The brachialis is a muscle with just 1 source and 1 insertion. As mentioned the muscle in the picture is the triceps - the short head (or lateral head).
Exercises with the wrist pronated more than supinated will allow a greater level of stress on the flexor. This is simply as the bicep brachii is not as strong when the wrist is not supinated and as such some more tension will be placed on the other elbow flexors (corocobrachialis, brachialis and brachioradialis IIRC).
So curls with a neutral grip (hammer grip) and with a reverse grip (pronated or over hand grip).
Try the “Atlas of Skeletal Muscles” - it is a thorough book for learning about muscular anatomy.