It would be easier to ferret this out if you were say “nocoffeeaddict” but …
The lower extremities are innervated by the lumbar spine (generally speaking). So if you have been doing things that compromise the low back or have a pre-existing “issue” in the lumbar spine or sacrum/sacroiliac joint then numbness is possible. However it’s not the only possibility and numbness could be tingling or something else altogether, eh? So there’s a bit of “wait and see”.
Unfortunately we, as respondents, and a bit handcuffed since you’ve not mentioned your age. A rigorous practice for a 20 year-old is not the same as a rigorous practice for a 47 year-old. So there’s a mystery element here though generally I’d agree that tossing one’s hat into the ring of power yoga as introduction can be sketchy. The teachers typically are not deeply trained, many of them have but 200 hours of training (some shockingly less) and the pace of the practice inhibits profundity of alignment, action, and feeling.
As it relates to health care practitioners I think one has to find what suits them. I personally do not run to practitioners that have only two tools of remedy (drugs and surgery) and who lean toward telling patience “you’ve got…” as once that label is applied it is very challenging to shed. But this is my paradigm and I have access to my teacher and other holistic practitioners. Not everyone has so chosen.
gordon
