I have been on a fairly strict diet for about 8 days. I have been eating fish, chicken, raw spinach, tomatos, radishes, apples, grapefruit, strawberries, raspberries, and drinking herbal tea and a lot of water. I have lost a little bit and I do feel a lot better. However, I am sleeping less and I have a slight headache that is pretty annoying. Does anyone know why this happens? Does this happen to anyone else?