Need to exercise

I have not been exercising for the last 2-3 months due to various reasons .... And am now feeling the effect. I have gained some weights and I also noticed that I am not as energetic as before. So before it get worse, I have to pull the brake and head back to the gym. It will be painful but it will be all worth it at the end...for my own good. Will be off to the badminton court shortly. Just do it! Period.