A new treatment program for post-traumatic stress disorder is under way at the University of Wisconsin-Madison that doesn't involve drugs or traditional therapy.
Some veterans returning home from Iraq and Afghanistan are finding relief through yoga.
Some returning veterans who suffer from PTSD can't turn off the sounds and sights of war, which flood their mind.
"PTSD is the past hijacking your mind and impeding you life in the present moment," said Dr. Emma Seppala.
Symptoms of PTSD include intrusive thoughts, hyper-vigilance and emotional numbness, symptoms which sometimes go unnoticed.
"I didn't think anything was wrong," said Travis Leanna, 25, who served with the Marines in Iraq for six months
He was never diagnosed with PTSD, but something wasn't right, and Leanna said he didn't even know it.
"If you would have told me I had a problem, I would have laughed at you. I didn't think anything was wrong," he said.