WARP-SPEED SHATNER HEADED FOR CRACK-UP!

DYNAMIC “Star Trek” legend William Shatner still has plenty of get up and go at age 90. But sources dished the space case thinks he’s invincible and loved ones are begging him to slow down before he hurts himself!

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“He still rides horses — and gets thrown by some, plus he’s still wrestling, skydiving, fencing, practicing martial arts and going race car driving,” spilled an insider.

“There’s nothing he won’t try, even swimming with sharks!”