This is a very ancient Chinese system of healing and re-balancing for mind and body. The exercises involve specific movements and a sound for each of the internal organs and their meridians:-
Category: Tai Chi for Health
Tai Chi for Depression
Regular Tai Chi does help with depression but you have to be well enough to get to the class! Lack of motivation is the biggest hindrance to accessing the benefits of Tai Chi. Once you are there, and attending consistently, you have the opportunity for a real transformation.