Brock Lesnar was serious enough about UFC return that he entered into a training camp

Brock Lesnar says that his flirtation with a UFC return was not just for leverage with WWE.
The former UFC heavyweight champion said on "Stone Cold" Steve Austin's podcast Monday (transcribed by FOX Sports) that he was so serious about making a return to the Octagon in 2015 that he actually entered into an MMA training camp late last year.
"I started training camp," Lesnar told Austin. "I wanted to test myself and see where I was -- not more physical, but mentally. I wanted to see the mental cha