Mario Lopez Shows Off His Fit Physique Going Shirtless at Boxing Gym on His 48th Birthday

Mario Lopez is working up a sweat on his 48th birthday!

The Saved by the Bell alum celebrated his birthday on Sunday (October 10) with a video of himself going shirtless while at a boxing gym.

Click inside to watch the video!

“48 years old today. Feeling strong, still,” Mario said in a video he posted to Instagram.

“Did like six rounds of sparring with these fools,” Mario added. “That’s what’s up. Age ain’t nothing but a number. Let’s do this. Have a great day.”

In the video, a shirtless Mario is drenched in sweat as he gives fans a glimpse at his fit physique.

“Celebrating another year today…. #AgeAintNuthinButANumber #Almost5thLevel #Thankful #48,” Mario captioned the post.

In a recent interview, Mario revealed that his 10-year-old daughter walked in on him doing something X-rated!