This is something I have wanted to try for so long. What finally put me on my way was the ad I saw in Cosmo for Simply Slender that is a premix. I am on my 3rd day. I have had headaches but I know that is from caffiene and fast food detox. I originally had planned to just do a 4 day but I feel so motivated today I may continue on to the 10 day. This is my first cleanse ever . . . what do you think?