Still lying on your back, knees bent, feet flat on the ground. Put your hands on your ribs at the sides of the chest. Breathe in deeply through your nose and out through your mouth, pushing your ribs out against your hands as you breath in. Repeat 10 times (remember it is as important to breathe out fully as it is to breathe in deeply.)
Put your hands on the upper part of the font of your chest. Breathe in deeply through your nose and then breathe out as far as you can through your mouth. Push your ribs up against your hands as you breathe in. Repeat 10 times.