I live in fear, therefore of injures and pain from over-training. To correct this, I need to give myself an optional out. On days that I feel like I can run, fine, do it -- it is great. But on days that I my legs feel messed up, I will take up yoga.
I like, in fact love, the tai chi that I have done, but it doesn't really feel like a workout, so for now I am not going to count it as a workout. I reserve the right to reverse this opinion, of course. Most likely, I will combine moves from both and call it a flexibility-based-meditative workout day. This might also be a good day to work in some more grip work
Here is a vides of "full spectrum" yoga over at expert village:
Bonus: Since I look at Spanish content reasonably often, searches came up with this Spanish yoga channel. I can look up a pose in English and see it reinforced, while practicing my Spanish. Fantastic.
I appreciate how clear the diction is in this video.