Yes.
Practicing the wrong way a person can cause himself a big damage. The main and the most dangerous mistakes are:
1. Practicing wrong asanas and pranayamas. There was a lot said about defects and their consequences, but we’ll remind you that regularly doing exercises the wrong way can lead to problems with the backbone (enforcing osteochondrosis) and with the cardio-vascular system (when you breathe wrong, you can strain your breath even worse).
2. A yoga complex built wrong, first of all uncompensated one, can lead to a significant changes in blood pressure (which you don’t need), states of ANS and so on. Most often this happens when a person wants to do only the thing he does well and not those he really needs. The pride…
3. Traumas. Graduality — in everything.
REMEMBER, yoga is a way for wise people, it brooks no unthinking and fanaticism.
The contrary is also possible. A person does yoga for some time (or comes some times to a group session, which is more often) and starts believing that all his problems are caused by yoga. «At a sight of diseases a yogin who fears them, says: the cause of my illness is in yoga. This is the first obstacle in yoga», — writes «Yoga Kundalini Upanishad». It is obvious that yoga has nothing to do with this, it is just the way to take away the responsibility for your health. This is how the so-called defence mechanisms of our psyche act, but the discussion of them lies beyond the scope of this book.