Expounding the many benefits of coffee

Today I saw a patient who cut his hand on a broken glass while doing dishes. Housework is not for the faint of heart. His aunt put coffee grounds on his wounds in order to stop the bleeding. It was surprisingly effective. All that when to naught when we had to clean and stitch him up a bit. Personally I love coffee. I have 2 cups a day. Studies have shown it has other health benefits - clotting was one I was unaware of - probably because I doubt it has been studied.