I do the 16/8 approach. Basically I fast 16 hours and eat all my calories in the 8 hours window.
I eat between 10.30am - 6.30pm anywhere between 1500 - 2000 calories depending on what I'm working on.
I eat clean the majority of the time but don't go over board. I try to stay away from fats. (bad fats) I eat carbs and protein equally. Most of my sugar comes from fruit (I eat loads) and I eat a large bowl of veg everyday.
Its not a diet its a way of eating.
I think in the next 3-5 years we will see a huge shift from the normal 'eat 5 small meals a day" approach to more of a fasting approach which is being proven more and more.
Once the myth of 'starvation" mode is dismissed.
Another rule is to exercise on an empty stomach HOWEVER some people can not do this for health reasons.
Also some health conditions don't allow for fasting so its best to check with a doctor first.
I do have little cheat days here and there if I have an event on where I will be eating in the evening. So it doesn't really affect my life in a huge way.