Also known as the Root Lock… Mula Bandha… this can be practiced even when simply sitting at your desk. This lock is the hardest and, I believe, one of the most basic of all pranayama (or lifeforce) locks in the body that needs to be mastered. To engage this root lock, engage the muscles between your anus and your pelvis. Sometimes these are known as kegels for women, but men can engage in this practice as well. Simply try engaging these muscles as you sit at your desk during the day. Not only will it strengthen your body, it will also allow you to engage this lock in your yoga classes as well. If you have a desk job, like I do, sometimes practices like this allow us to engage our bodies during the day as well as our minds.