How often do you hear people who are getting frustrated with their weight say, “That’s it, I’ve had enough, I’m not eating any more until I lose this weight” or “I’m going to have to go on a diet to lose this extra weight”. 40% of women and 25% of men are on a diet at any one time. Over 40% of men and 80% of women have been on some form of diet in the last year. On average, women want to lose approximately 22.5kg and men 22kg – and over 85% use dieting as the means to lose this weight. Unfortunately, over 99% of them put the weight back on, plus more, within a year. Being on a “fasting” diet, for as little as 24 hours, can lower your metabolic rate by up to 25%. Up to 50% of the weight you lose will be from fluid (water) while the rest will be muscle with only a tiny percentage coming from fat. This fluid loss is due to the decrease in carbohydrate (fruits, vegetables, bread etc.) in your diet, therefore there will be a subsequent decrease of stored glycogen (sugar in the body) in the muscles of your body. Since water is stored with glycogen, when you go on a calorie restricted diet you will lose a lot of fluid. Carbohydrate is also a very important source of fuel for the body – the brain functions on pure carbohydrate. This means a fasting or calorie restricted diet will make you feel very lethargic, lazy and unable to think clearly or even logically. This means you will be less active during the day and you will burn off less energy and fat. The loss of muscle tissue from dieting will lower your metabolic rate and reduce the total number of calories you will burn during the day. Resting metabolic rate is important as it contributes 70% of your daily calorie expenditure. This is why you put weight back on, plus extra, when you go off the diet and go back to your normal living conditions. A fasting diet can actually “clog up” your digestive system, as it is the fibre in your diet that maintains your digestive movements and keeps you regular. However, a fasting diet that is commonly said to cleanse your “system” has no food, let alone fibre in it. Several days of fasting can cause serious constipation problems. All of the above physical changes from dieting will guarantee that you put more weight back on than you actually take off and make it even harder to lose in the future.