Tip 2-Be patient. Think about how long it took you to get fat and unfit. It’s likely that this was a very gradual process that slowly built up over the course of months if not years. It would seem therefore a bit optimistic or possibly even naive to expect to be able to reverse a biological event in a few weeks or days that took much longer to happen in the first place. Any good personal trainer could make you lose 4 lbs in an hour or two. I could ban all water intake, run you hard, do a vicious circuit, put you in a sauna and then wrap you in clingfilm (well, not the last one). Any quick weight loss will be from loss of water and will inevitably go back on over the course of the next few hours or days as you rehydrate. Any good personal trainer or weight loss specialist will also tell you that the safe upper limit for weight loss it 2-2.5lbs a week; any more than this and you are either losing water or losing lean muscle mass or both, and will put the weight back on after the diet, as well as having depressed your metabolic rate, making weight gain even more likely (see the knowledge fact sheets).
So the key is to take your time and look at weight loss as a silver lining of getting fitter and healthier, and don’t believe the media, you can NOT lose 10lbs in ten days and keep it off.