Some days are about physical pain. You get beat up, you work long hours, every muscle in your body ends up sore, you find out just how far your body can go before it breaks, and then you go past that point.
Some days are about mental pain. You endure intense boredom when you should be having a nice time, or you have to deal with a constant stream of idiots, you find yourself going mad from lack of positive stimulation.
Some days are about emotional pain. Loss of love, loss of security, loss of family.
They can triple up.