Abdominal Breathing: -
This pranayama will help in increasing the air capacity of the lungs, which will help you in practicing the other pranayamas and asanas. It also helps in relaxing the mind.
Lie supine up and pull knees up and feet flat on the ground. Keep the knees joint together and feet apart.
Place one had on the abdomen
While inhaling move the abdomen upwards
And while exiling move the abdomen downwards