I recently heard study on the radio. One of the tips from that study to loose weight is don't start eating right and exercising at the same time. They say its usually too much for most people to handle right away. They said start with eating healthy. Once you have a better eating habit you body will wanna start doing more activity naturally and then you can start exercising. Because you are now exercising your body will wanna eat even healthier then you were before. It kinda made sense when they talked about it but I have only really heard this system in the one study. The never really gave exact time frames but made it seem like more of a long term thing then a quick diet.