There are a couple of hormones called Leptin and Ghrelin which regulate our hunger signals. Leptin is the hormone which signals 'fullness' and is produced by our fat cells. It tells the brain that we have enough food and can stop eating. If we become overweight then we can become leptin-resistant which can mean it's very difficult to stop eating / always hungry even when you've eating enough food to fill the energy stores.
Some experts recommend a breakfast with at least 50g of protein, avoiding snacks and reducing carbohydrate intake to 50g per day for 6-8 weeks to help increase Leptin sensitivity and rebalance those hunger signals.
Ghrelin is the hunger hormone, which signals to the brain that the body needs more food. A good way to reduce your Ghrelin levels is to drink a large glass of water (1 pint) and this will reduce your hunger.
This is why the Metabolic Balance programme is based on 3 meals per day with no snacks (at least 5 hour gaps between the meals and an overnight fast of at least 10 hours), it also provides you with the right carbohydrate : protein balance in order for you to be able to burn fat in the most efficient way for your body.
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