What's the perfect fasting time?

Research has found the optimum time of fasting is between 18-24 hours. So if your time of eating (window of eating) is 6 hours, and let's say you eat at 12 noon and then again at 6, this gives 6 hours of eating and 18 hours of fasting. Then if you slowly graduate to a shorter and shorter window, for example, 4 hours, this would be even better so this could be eating at 1 and then again at 5 pm.

Now, if your metabolism is very slow and you have a history of very bad eating and you have some serious insulin resistance, then you need to do 1 meal a day. This would give you around 23+ hours of fasting for some serious fat burning. Then if you added exercise (high-intensity interval training), it would take you to a whole new level, esp. if you exercised early in the morning during the fasting window. Get more sleep, add apple cider vinegar and help yourself even more.

The more you fast, the more you will get into autophagy, which is a self-cleaning, recycling process of your cells, which promotes anti-aging and a healthier immune system.