Once you start improving on a regular basis, it can be difficult to stop as long as you keep to a few simple rules. This momentum should never be understated. Being in a good place most of the time keeps your mindset strong and your body feeling fit and strong, and as if nothing is impossible.
Same when you start putting on weight and inches around your hips and waist. This can be a major effort to stop it happening, to reverse the process. Suddenly you will have to change what you are doing, really change your lifestyle again in order to stop the rot setting in.
So its easier to stay in shape than get out of shape.
Being in shape is associated with feelings of happiness, satisfaction, wellbeing, plenty of energy and an ability to do practically anything physically, and your mental strength is likely to be greatly increased.
Being out of shape is associated with being much more irritable, wonder all the time how you could feel and look so much better, you may tend to put off any physical challenges, a shortness of breath even on the most ordinary of tasks, and your mental strength is always under pressure.
So as it seems as if it may be a struggle to get in shape, once you get there you will automatically feel much better across the board, and perform better in every area of your life.
