NEW YORK -- Dan Nevins commands his yoga class with authority.
"Spark your ties. Fire them up," he tells the class. "Start to create the inner fire right now."
For Nevins, teaching yoga is much more than a job. It actually saved his life. Eleven years ago, while serving in Iraq, an IED exploded under his Army vehicle. The blast destroyed both his legs.
"I just remember having this revelation that I'm alive, I'm alive! That I better do something to keep it that way."
Nevins spent 18 months at Walter Reed Medical Center. With the help of the Wounded Warrior Project, he learned to climb mountains and play golf. But two years ago, while recovering from another surgery, he was bedridden and started having flashbacks.
"And those thoughts of the not-so-great experiences from combat just kept coming back. I didn't get to the point of suicide, but I finally understood in those 8 weeks at home and I knew that I needed help."
A friend suggested yoga to Nevins.
"I was like 'No. One, I'm a guy; Two, I'm an Army guy; Three, I don't own any spandex, and no.'"
Despite his reservations, he finally relented and took the class.
"I got into this Warrior One pose. I rooted down and I felt this real surge of energy from the earth up into my body like into my soul and I shot up like 'Oh my God, I get it' like the earth was saying 'where have you been the last ten years.'"
Last year, Nevins completed yoga instructor training. Now hundreds of people come to his classes.
"I felt if he can do it without legs, what's my excuse," said one student.
Nevins hopes to reach both veterans and non-veterans alike.
"Hands to forehead center and we bow and say Namaste," he says, closing another class. Students erupted in applause and cheers.
Nevins is a warrior on a mission to save others.