I usually have to have something else set me off.....like a sad television show (Extreme Home Makeover is usually good for this) or one of those animal abuse commercials (the one with the Sarah McLaughlin song). But once I get going I start to think about everything else that could possibly make me cry and I'm good to go for about 30 minutes. I try hard not to do it at night, though, because I'll wake up with swollen eyes and a vicious headache. I usually try to cry when I'm alone - that way I don't have to reassure everyone that I'm really okay. I don't like explaining myself. But a good cry can be very refreshing.