Lay on your back on your bed, with the top half of your body overhanging at around the nipples. So your shoulders and
head are completely off the bed.

Really tense and feel the two large muscles that go vertically from your shoulder to your ear. (The Stemocleidomastoid’s)
These muscles are the ones we are going to strengthen and enlarge. Tilt your head back, to the left, and lift your head squeezing the right side . Hold it tense once your head is lifted nearly to your chest, then release and
slowly come back down again.

Repeat this 15 times or until it is absolutely killin you. Then do the right side, tensing your left muscle. Do this in 3 to 5 sets through out the day. You don't have to do them consecutively. Just make sure to really tense them. Really feel the crush of the squeeze.