Guy Fieri, 55, shows off his tattooed physique in SHIRTLESS selfie as he celebrates his ‘last workout of the year’ with a sauna and cold plunge: ‘Hope everyone has great holidays!’

Guy Fieri turned up the heat this holiday season with a sizzling shirtless selfie.

The 55-year-old Food Network hunk β€” who said he won't leave his fortune to his sons unless they earn two college degrees β€” took on his Instagram stories Friday to give his fans a belated Christmas gift in the form of himself, half-naked.

With his signature bleach blonde hair slicked with sweat, the Diners, Drive-ins and Dives host posed like a pro with his shoulder tattoos on full display as he relaxed in a sauna.

“Last workout of the year followed by a hot sauna and a cold dip,” he captioned the scorching snap. 'I hope everyone has a happy holiday!!'

Guy also said hitting the gym was his way of preparing for his son Ryder's 18th birthday on Sunday.

Guy Fieri took to his Instagram Stories on Friday to give his fans a belated Christmas gift in the form of himself shirtless

In a follow-up photo, Guy revealed the temperature of the sauna, which reached 176 degrees Fahrenheit.

'Bring on the heat!!' he exclaimed.

The steamy social media share comes after Guy – who shares Ryder and son Hunter, 27, with wife Lori – admitted he wouldn't hand out his fortune to his children on a whim.

Speak with Fox newshe said that Ryder and Hunter had to obtain two degrees to receive their inheritance.

β€œShaq said it best. Shaq said, β€œIf you want this cheese, you gotta get two degrees,” Guy exclaimed. “Well, my two degrees mean, you know, graduate school.”

According to the restauranteur, Ryder protested the idea.

Per Fieri, Ryder told him, β€œDad, this is so unfair. “I haven't even graduated yet, and you're already insisting I get an MBA?” He says, 'Can I just finish my studies?'

Guy added: β€œI told them the same thing my dad told me. My father says, “If I die, you can expect me to die broke, and you'll pay for the funeral.”

Guy also said hitting the gym was his way of preparing for his son Ryder's 18th birthday on Sunday;  seen in March

Guy also said hitting the gym was his way of preparing for his son Ryder's 18th birthday on Sunday; seen in March

Guy – who shares Ryder, 18, and son Hunter, 27, with wife Lori – recently admitted he won't part with his fortune without his children working hard at school

Guy – who shares Ryder, 18, and son Hunter, 27, with wife Lori – recently admitted he won't part with his fortune without his children working hard at school

β€œAnd I told my boys, 'None of this that we have… that I built, you're not going to get unless you come and take it from me.'”

It has been a great year for Guy, just like him signed a new three-year, $100 million deal with the Food Network in November.

Fieri joined the Food Network family in 2006 when he won The Next Food Network Star and his own series, β€œGuy's Big Bite.”

He has since starred in several series, including Guy Off the Hook, Guy Fieri's Road Show, Guy's Family Road Trip, Guy & Hunter's European Vacation and Guy's Ranch Kitchen.