India, July 2 -- Tom Cruise is still doing his own stunts, and those close to him warn the star's relentless pursuit of cinematic thrills will "kill him" one day.

"Tom is relentless in keeping himself in amazing shape and has made zero concessions to age," a source told Radar Online. "In fact, he is driving himself harder than ever."

The insider went further, adding, "It's almost as though he'll kill himself to stay on top. People are worried he'll put himself in harm's way once too often!"

During a filming of Mission: Impossible Fallout in 2018, he broke his ankle leaping between the buildings, but he insisted to complete the scene.

During his upcoming movie, Mission: Impossible The Final Reckoning, he reportedly broke a Guinness Wor...