
There are many phrases we use to describe how we feel. Many are idioms that have worked their way through our changing language and no longer retain the reference to their original source, but are understood nonetheless. Cat's got your tongue. Chip on his shoulder. Foam at the mouth.
Over the years, I've had occasion to realise that some seemingly funny statements stem in fact from truth rather than obscure, long-lost references.
Knees Knocking. I believed this was only as true as the cat getting you tongue. But when I gave a talk for the first time, many years ago, I was surprised to find that behind the pulpit, my legs were indeed shaking so badly that my knees were hitting together. Hopefully the bishopric appreciated the fact that I didn't fall over in addition to shaking at this rate. I was in awe that this phrase simply described an actually possible event rather than an exaggerated concept.
Broken Heart. This too I thought was a mere description that had nothing to do with actual pain. I am of course not trying to convince you that that organ in your chest in fact breaks or tears or is severed in anyway. However, I remember being amazed again that there was actual, and very real pain in my chest when my first boyfriend told me it was over (again, so many years ago). We speak of giving our hearts, protecting our hearts in this same vein-- referencing the true pain that can come to our chests.
Hands that Hang Down. This was another phrase I felt referred merely to the fact that when one is discouraged or sad, they let their arms hang at their sides. I believed it was symbolic and had no further meaning than this. I have had occasion in life though to feel a real weight in my hands when the world seemed too much for me. I learned how much one could really do by starting with this weight for someone and moving on to the deeper sources of weight.
I am always amazed at how much experience can teach us, even, and maybe especially, difficult experience.