Mark Wahlberg, 51, shows off his rock-hard six-pack abs as he goes shirt free

dailymail.co.uk:

Mark Wahlberg took to Instagram to show off his impeccable physique on Wednesday.Boasting rock-hard six-pack abs and perfectly pumped biceps, the Boston native looked as in shape as he did in the Calvin Klein underwear ads he was featured in back in 1992.The 51-year-old Hollywood star and serial entrepreneur touted Performance Inspired Nutrition and F45 Training, in which he has business interests.

Rock hard: Mark Wahlberg took to Instagram to show off his impeccably fit body on WednesdayThe series of snaps feature the actor doing four different classic bodybuilding poses in front of a mirror in what appeared to be a hotel room.Wearing nothing but navy blue athletic shorts, Mark flexed for the camera showing off the extreme definition of the muscles in his back, shoulders, arms, and stomach.

He captioned the post: ‘@performinspired & @f45_training (arm muscle emoji) F51!’Wahlberg emphasized that he stands behind the philosophies of the two businesses.

Shredded dad: The father-of-four continues to keep a busy working schedule and attributes his stamina to his healthy and fit lifestyle A health enthusiast who has invested in various businesses to promote a healthy lifestyle, the star showed fans that he practices what he preaches.Wahlberg’s Adonis-like physique is one thing that has remained consistent in his transition from teen pop idol ‘Marky Mark’ to the well-regarded actor and entrepreneur he is today.The father-of-four to Ella, 18, Michael, 16, Brendan, 13, and Grace, 12, with whom he shares with his wife of 13 years Rhea Durham, continues to keep a busy working schedule and attributes his stamina to his healthy and fit lifestyle.