Running and / or cycling
Starting your day with a morning run is very helpful. It will speed up your metabolism and your need for food will be less than usual. Keep your body occupied! After a light meal or some energy refills, stretch your whole body and don’t forget your ankles, especially the knees because they are stressed while running. You don’t need a treadmill, just run few blocks with your running partner if you prefer, and as for the walking, do it light first, and then more and more each day till you get your form. If you easily get bored with running you can ride a bike instead.