ABOUT NECK LOCK: Jalandharabhanda, also called jalandabhand, or the neck lock, is essential in yoga and particularly in meditation.

It is also, for freedivers, known as the glottis - that tricky little bugger that you need to keep locked in order to keep your mouthfill.

Neck lock is taught here in a super-easy and accessible way, to allow freedivers to really feel and understand what and where their glottis is, and how to get it to behave and do what you want it to.

This is the first step to many of the important breathing exercises (pranayama) in yoga, and to successful mouthfill for safe, deep freediving.

DISCLAIMER: Yoga for Freediving courses and videos are not a freediving certification; they do not certify you to freedive in any way. If you are not certified to freedive, you must take basic training with a certified instructor before practicing any freediving exercises in the water.

Neither Sara Campbell nor Discover Your Depths takes responsibility, nor will be held liable for, any accidents or injuries sustained through freediving or any of the exercises taught in these courses.

If in any doubt, please seek medical permission before commencing any yoga or freediving training. And as with all physical exercise, please ensure that at all times you listen to your body, train conservatively and NEVER DIVE ALONE.

Have fun, and keep your training safe, conservative and enjoyable.