CrossFlowV: 40-minute Immunity Boosting Flow. An accessible flow for ALL levels. Boost your immune system with deep breaths to decrease cortisol, chest openers to stimulate the Thymus gland (an organ located in the chest responsible for the growth of T-cells, a type of white blood cell essential for supporting the immune system and fighting infection), twists to detoxify, and poses where your heart is above your head that increase the circulation of lymph and drain germs from your body. Deep breaths, you have GOT this!