It's really hard to understand the "chi", so I will venture to guess that making movements from the core, working the joints, and making slow, synchronized movements while breathing naturally with e movements activate the release of feel-good hormones, like endorphins, and releases tensions in the body. It's just what I need since I've been insanely stressed out lately.
However, yoga has the added benefit of working the muscles, while taichi... Not so much. So while it is possible to distress and feel bliss from taichi, I still need to pick up some sort of cardio and strength training.
What's the most surprising is that with all my martial arts training, yoga and anatomy, the simple movements of taichi still surprise me. The movements feel totally novel. Just when I thought I figured out the secrets to Ashtanga and Bikram yoga asana sequencing magic, I am completely stumped by taichi sequencing. Guess I have to keep taking courses until I figure it out.