We think of them as courageous, chivalrous, brutal and cold-hearted, but medieval knights lived hard lives and suffered.
In reality, the lives of knights were filled with a litany of stresses much like those that modern soldiers deal with.
They were often sleep-deprived, exhausted and malnourished. They slept outside on hard ground, fully exposed to whatever weather befell them. And their lives were full of horror and carnage as they regularly killed other men and watched their friends die.