So with haveing adequite carbohydrates for energy beforehand, do simple exercises like wall squats only the range comfortable for you, pushups from your knees, crunches, supermans (lying on stomach lifting arms and legs up) then slowly work your way into other exercises as you
build muscle and strength.
Protein must be included after each workout. Also incorporate cardio exercise like brisk walks, cycling, hiking, swimming, or whatever is best for you.