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by voisin
2104 days ago
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> One potential downside to steady regimented fasting _when combined_ with caloric restriction, is a decrease in your basal metabolic rate (BMR). Check out The Complete Guide to Intermittent Fasting. The research he cites shows that the effect you describe occurs in caloric restriction diets, not fasting. Fasting increases HGH and maintains BMR. Perhaps what you are describing is the early days of fasting when your body is becoming fat adapted and you feel a bit sluggish, but after a short period your energy levels return to normal (for me it was less than a few weeks, 5 years ago, and my wife just started fasting with me and she is adapted and back to full energy while fasting after two weeks). |
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Fasting enables us to not have to focus on calorie restrictions to see a reduction in body weight. However, if you only eat 500 calories a day, eventually you will run out of fat and your BMR will go down as you approach a lower BMI.
It's a very slow and gradual process, but it does happen. If you've got plenty of fat to burn, not a huge issue, but as you lose weight it can start to apply more.
Anecdotal evidence also suggests that people who stick with a very strict IF schedule tend to see slower results and bigger plateaus than those who change things up more often.