The afterburn effect is called EPOC or excess post-exercise oxygen consumption. Your metabolic rate increases while you exercise and when you stop you go back to resting. The energy it takes to get the amount of oxygen in that is need to get back to resting is EPOC. It is highest after a workout and can be persistently high for up to 38 hours. It isn’t what you actually think… it doesn’t burn calories like your mind thinks. It is oxygen consumption not calorie burning.
The best way to kick it into gear is to do high-intensity interval training or HIIT. This can be cycling, sprinting, plyometrics, Strength circuit training and swimming. They Should only be done for 30 minutes at a time and no more than 3 sessions a week. This is to allow the body to recover adequately from the workout.
A good place to start is with sprints and Cycling, though if you’re lucky enough to have a pool handy swimming. As your strength increase than move on to a little harder workouts such as plyometrics and strength circuit training.
Secret: Dynamic jumping moves that increase power such as jump squats and burpees are known as plyometrics.