Reverse dieting: What is it? Who is it for? How to do it correctly!

So you've done the hard work of weight loss. All the calorie counting, all the cravings, all the cardio, all the treats and desserts you've passed on, have all contributed to a significant amount of fat loss for you. Congratulations! But now what? Is this a short-term success where you have less energy while you wait to yo-yo back towards weight gain, possibly obesity?