Intermittent fasting (IF) has become the latest diet fad and the subject of several books. IF diets purportedly accelerate fat loss and some proponents go so far as to claim you can build muscle while fasting. Trouble is, in addition to losing fat, a study by Wilson et al (1) shows that you could also be losing muscle, or at the very least, not building muscle.Most IF plans tout the benefits of fasted weight training. Some suggest 10 g of BCAA during training. But according to the study, consuming leucine (BCAA) without ample carbohydrate present prevented protein synthesis
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