That is called intermittent fasting. For example, for 16 hours out of 24, a person does not eat. And then for 8 hours, a person is allowed to eat but not constantly eating. A bit of control. Anyway, since being diagnosed with prediabetes and then diabetes full blown, I believe it is one way to get the body back on course. However, I find not eating at my regular hours a bit of a struggle. I guess, the idea is to give the body a chance to rest from eating so much. Everything in moderation??