Not all technicians and athletes agree with this methodology and even in the scientific literature you can find pros and cons. However, the subject has become somewhat topical recently, given that there has been a great deal of interest in what is termed "intermittent fasting".
How effective is fasting training?
But let's clear the field for misunderstandings: to sustain physical efforts you need energy, energy that comes from food, and the longer the duration of training, the greater the amount of energy you need. Similarly, the greater the intensity of the effort, the more fuel is needed that consists of sugars.
- A precise training program that means inserting specific fasting workouts (generally at medium low intensity) in a certain period of time with the aim of forcing the body to use lipid stocks in a very efficient way;
- Aerobic activity of medium to low intensity (like jogging) is performed in the morning and done without first taking anything. At the end of the activity you can have a nutritional breakfast.
In the first case it is necessary to be followed by a specialized technician or a doctor, in the second it is essential to test your body and study its reactions, proceeding gradually, starting for example with 20 minutes of light running, we advise against exceeding the hour of fasting activity. If, on the other hand, you perform "mixed" activities that involve a combination of aerobic activity and strength, especially when performed at medium to high intensities, as in the case of interval training, you need to be very careful. The risks of performance impairment and, in the worst case, of hypoglycemic episodes, become significant.