Yes, Yoga practiced incorrectly can screw your body. Even the breathing exercises if done incorrectly can screw your body. Tip: Do NOT practice Yoga from a book

Yes, Yoga practiced incorrectly can screw your body. Even the breathing exercises if done incorrectly can screw your body. Tip: Do NOT practice Yoga from a book. A close friend of mine started breathing exercises & yoga from a book. He's been doing some forms of these for many years, and this was the first time he was doing them from a book, and doing newer things. He did or overdid something, and some balance in his body was disturbed. His weight dropped from 85kg to 54kg within a couple of months, becoming almost literally skin and bones. He had to go for some intensive treatment to get his body back in line. And this is a guy who I've known personally for 8 years now - not an anecdote I've heard. So stick to the basic exercises, don't tie yourself up in knots, don't do any crazy breathing exercises, and certainly don't over do anything.