I think for me it has to do with menopause. I was fine unti all suddenly the joints and muscles in my whole body began to ache to the point of me screaming out loud. Talking about a woman had two babies without pain killer during childbirth!!! Until recently my friend told me it might be menopausal symtoms. Mood swing, hot flashes, joint pain, night sweat, craving sweets.... the list goes on and on. I really want it to end!!!