Superbowl

I will put it into context most of us will understand.

This is a chicken. Those 2 giant muscles in the middle, what we'd call the chicken breasts, are the pectorals. For us, we use them to push, as in a bench press or butterfly. For the birds, these are the flight muscles.

If you've carved a chicken or eaten chicken on the bone, you know the breast is by far the biggest piece. Part of that is selective breeding, so much so that the chickens we raise as food are too meaty to get very far with their wings anymore. Wild chickens (jungle fowl) can fly pretty decently for big birds.

Here's a jungle fowl:

You've also seen that the chicken breast is connected to that big ridge on the ribscage, that giant, long, sturdy breast bone.

That is a huge anchor point for the muscle to counteract all that force of the flapping. With our tiny pecs, we'd tear a muscle before we got anywhere close to getting off the ground. But the bird breastbone goes from the top of the ribs to the hips. If your chest muscles were the size of your whole torso and thicker than your thighs, imagine how strong you would be!

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