Intermittent fasting (also known as IF) involves eating very little or nothing for short periods throughout the week followed by a normal (healthy) diet the rest of the time. The theory, which has been tested in various scientific studies, is that fasting every now and then can help us lose weight, reduce the risk of certain diseases and even prolong our lifespan.While weight loss advice in recent years has been to eat little and often to ‘keep up the metabolism’, longer periods between eating may in fact be much more useful for weight loss and overall health.There are lots of different ways to go about intermittent fasting. Some diet programs allow you to eat a total of 4-500(for women)/5-600 (for men) calories during a fast day, some advocate a full 24 hours without a morsel of food passing your lips, and others allow a 6, 8 or 10 hour window in each 24 hours in which you can eat. Perhaps the most well-known is the 5:2 diet, first mentioned by Dr Michael Mosley in the 2012 documentary:‘Eat, Fast and Live Longer’.

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Healthy Intermittent Fasting: for Weight Loss, Muscle Gain and …

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