People usually gain all the weight they lost and then some. It is because as you lose weight, your metabolism slows down. I read all of these posts and none of them makes any sense. Don't take it personally, but I have been studying this topic for some time now and it seems to me the best time to eat is in the day. After about 6 pm, the diet should be limited to fruits and vegetables as the metabolism slows down at night.
As far as calorie intake, to those people who say you must eat about 2,000 calories a day, give me a break. Like you're going to follow that b.s for the rest of your life. It is all about muscle retension. For every pound of muscle you lose you're body burns 30-50 calories less a day than it used to. The diet should consist of fruits and vegetables and you'll be okay. Every diet you go on will lead to muscle loss.