Luke Grimes says it’s hard work to remain a Hollywood heartthrob — but that’s not why he’s committed to the gym.

THE Yellow stone actor, 40 years old, revealed to Men’s health that he seeks to remain in perfect physical and mental health during his professional travels.

“Gyms, for me, are more about the mental aspect than making sure I look good without my shirt on or anything,” Grimes told the outlet. “I mean, sure, I’d like to look good without my shirt on, but we all would.”

Grimes explained: “If I go a few weeks without working out, I start to get really dark. So I have to – I just have to do it. I’m 40 now, so I know I have to do it.”

When you travel for work, Grimes only has a few hours in each city before having to get back on the bus.

He toured the country following the release of his first country album earlier this year.

Besides trying to stay active with workouts, Grimes admitted it can be “difficult to eat well” on the road.

“It’s a totally new process that I’m still learning,” he said. Men’s health. “I will say that whenever I get a gig and go to a new city, my first thing is always ‘I need to have a routine.’ This is what really helps me. I quickly try to find a few places where I like to eat and where I feel comfortable. I find a gym and really stick to the routine from day one.

The actor said “it’s so much easier to be unhealthy” when considering the demands of modern life.

Besides exercise, Grimes revealed that self-help books and therapy are crucial to maintaining a positive mindset.

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Yellow stone just aired its series finale on December 15 after five seasons. Grimes also spoke to Men’s health about the Paramount Network series and her on-screen father Kevin CostnerIt’s an early release.

“I haven’t talked to him since (he left),” Grimes said. “It’s not a case of hard feelings or anything. It’s just that it’s Kevin Costner.”

He added to Men’s health of Costner, “It’s a big deal. I just don’t feel like it’s my place to reach out. He can reach out to me if he wants.”