Mending country superstar Tim McGraw is slowly battling back from multiple surgeries on his knees and back, and RadarOnline.com can reveal his recovery is amazing and going better than anyone expected.

The 58-year-old Don't Take the Girl singer looked fit and muscular – and with a surprise clean-shaven noggin – when he was spotted walking to his recording studio in Nashville on July 29. Article continues below advertisement

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"Tim's shaved head and ripped physique aren't the only things that are attracting attention to him these days," shared an insider.

"He's a walking example of how fortitude and faith can banish the aches and pains. It hasn't been easy, but he's doing it a

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