Tiger Woods is keeping it 100% real about his rehab for the injuries he suffered in his car crash -- saying it's the most painful experience of his life.
"This has been an entirely different animal,” Woods told Golf Digest ... "I understand more of the rehab processes because of my past injuries, but this was more painful than anything I have ever experienced."
As we previously reported, Woods suffered major injuries to his right leg in the Feb. 23 crash -- shattering multiple bones which required several complicated surgeries and a metal stabilizing rod.