Inhale. Start counting up to 10. Then inhale a little more and count until 10 again. How many lungs allows you to do this, so much is necessary for the correct execution of the exercise. Also do it out.
Inhale. Start counting up to 10. Then inhale a little more and count until 10 again. How many lungs allows you to do this, so much is necessary for the correct execution of the exercise. Also do it out.