I had stomach cramping, loss of appetite, sore muscles, and a touch of insomnia. I am in the fourth week, and I do feel better now.
A friend of mine who is a holistic healer told me that the body works in cycles, and sometimes those cycles, especially when we detox, are intense and lead us to wake up in the middle of the night. She didn't tell me this in relation to SB, but I think it still applies.
I don't have any real suggestions on what you could do to stop this from happening, other than to tough it out.