The key objective of the Lief program is to gradually train your heart rate variability (HRV) higher, and increase your average HRV from week to week to help your nervous system be more resilient to stress. To this end, Lief’s patented “HRV autodose” feature makes HRV biofeedback responsive to your body, giving you just the right amount of training to move your HRV biomarkers into a healthy zone. In addition, you have the option to subscribe monthly to a Lief Coach, who helps you stay on track, train your HRV higher, and increase your mindfulness each week.