This short instructional video takes you through step by step how to measure your BOLT (Body Oxygen Level Test) score and why it is useful as a measure of your breathing efficiency.

Your BOLT (Body Oxygen Level Test) Score is an indicator of the functionality of your breathing based on your sensitivity to carbon dioxide - the main drive to breathe.

Your BOLT score is best taken first thing in the morning upon waking.

You will need a timing device and a note pad to time yourself and record your score.

*Breath-holding is NOT recommended during pregnancy.