Did thirty minutes of tai chi this morning: two qi gong forms, twenty push-ups, some extra squats, and the tai chi form four times. It was about right for a work-out.
I think the thing about a longer workout, as opposed to just “doing the form once” is that there’s much more room for improvement and performance goals inside of a set block of time than there is in a once-through situation. There’s more that can go wrong; but there’s also more that can go right. It’s not even a balancing act — giving tai chi more time, leads to better performance.