QUOTE(Vantage @ Dec 17 2007, 04:27 AM)

That's the site where they say:
"21 is the maximum of each exercise you should ever do. If you want to enhance your program, do the exercises at a faster pace, but do not so more than 21 of each exercise each day. Doing more than 21 repetitions of each exercise in any day will affect your chakras negatively and can create imbalances in your body."
Hi Vantage,
I have never read anything like that elsewhere. The T5T exercises turn up in other books now and then, i.e. #4 is in the advanced section of Furies combat conditioning.
The original book did talk about the dangers of doing too many, but the example was the whirling dervish whirling for hours on end, not from just doing + 21 reps or practicing twice a day

The thing I liked most about T5T was that you only had to do 21 reps once a day, although I tend to do them rather slowly so it's more like 20min of exercise than 10min.
If you feel like doing morning and night I'd say go for it and see how it feels to you. Apparently most people end up adding more yoga poses, if T5T is all they are doing, to make a longer workout.