Bret Michaels possessed a sheer will to get with groupies on his tour bus.

Based on Rock of Love, we already knew that Bret Michaels possessed a sheer will to get with groupies on his tour bus.

But now we know there's one thing this rock star cares about even more: living.

As his condition continues to improve, Michaels' neurosurgeon at Barrow Neurological Institute at St. Joseph’s Hospital and Medical Center in Phoenix is marveling at Bret's recovery and attitude.

"There is no doubt that Mr. Michaels' condition is serious," Dr. Zabramski said this week, following the singer's subarachnoid hemorrhage on April 22. "Bret's sheer will to live and fully recover is undeniable. He has an unbelievable fight in him and told me what kept him alive at the moment of the hemorrhage was that he did not want his family to wake up and see him lying unconscious in the middle of the floor."

Quite a Rocker

Michaels has two daughters, Raine and Jorja, ages nine and four.

He's also a diabetic who has suffered through numerous "roadblocks," Zabramski said, including "hyponatremia, severe cranial and back pain suffered from blood drainage." His patient in stable condition, the doctor added:

"It was a combination of Bret's fight to stay conscious during the hemorrhage and get to the emergency room, and the immediate medical attention provided by our staff at Barrow that enabled us to stabilize his condition.”

The team at Barrow will hold press conference on Tuesday, in which surgeons will update Michaels' progress even more.