Outlander fans are well aware that Sam Heughan has a phenomenal physique, but the Scottish actor admits he has to tailor his workouts to achieve Jamie Fraser’s ‘fine a**’.

The 37-year-old actor and his on-screen love Caitriona Balfe have been busy promoting the upcoming season of the Starz series, and he recently dished about what it is like to be one of the most desired men on television.

Sam is often scantily clad and baring his backside in the series, and when asked if has any particular tush maintenance to play Jamie, he told Glamour that he has recently been using a booty band to sculpt his glutes.

Ripped physique: Outlander star Sam Heughan has detailed how he tailors his workouts to play hunky Jamie Fraser in the Starz series

Working those glutes: Sam, who is often scantily clad in the series, aid he just discovered the booty band, noting that ‘it really works’

‘I do tailor my workouts,’ he said. ‘There is something very physical about Jamie, and he is probably bigger than I would be in real life. Also, I just discovered the booty band, and well, you might find one in my bag. It really works.’

Sam’s efforts are clearly paying off, as Diana Gabaldon, the author of the Outlander book series, publicly announced during a recent interview that the show’s star has a ‘fine a**’ — and he has no problem with the description.

‘I’d say this: Diana Gabaldon has very good taste, and she would know a fine a** if she saw one,’ he joked. ‘Really, I feel very fortunate that she’s given me that title.’

Sam went on to hint that his booty will continue to be on display, saying: ‘If that’s what you’re looking for, season three won’t disappoint.’

Keeping fit: The Scottish actor admitted he has his insecurities, which is why he goes to the gym all of the time

That’s a wrap: Sam is pictured on set with his on-screen love Caitriona Balfe

Like his character, Sam is just as humble about his appearance, and he admitted that he isn’t always comfortable with his body, even though many would describe it as perfect.

‘I’m a Scotsman. I love my whiskey and bad Scottish foods,’ he explained. ‘All actors are insecure. And I’ve got my insecurities, which is why I go to the gym all the time.’

James White, founder of Roark Gyms, recently detailed how he got Sam in shape for his role on the series and his cover shoot for Men’s Health South Africa, and surprisingly, he was allowed to have some of his beloved whiskey.

‘We allowed Sam to have five units of alcohol a week,’ he told Channel 24. ‘The man likes a drink and it seemed cruel to completely deprive him of his one true love.

Red carpet events: Sam and Caitriona, both 37, have been busy promoting season three of the series, which premieres on Sunday

Spoiler alert: Caitriona recently assured fans that Jamie and Claire will reunite in the 18th century this season

‘He could choose to drink five whiskeys in one night or have one whiskey each night for five nights.’

And while he may have been allowed alcohol, Sam had to fast intermittently which left him with only an eight-hour window per day to eat ‘eggs, meat, salad and vegetables’.

As for his on-screen romance with Caitriona, season two of the series ended with Jamie sending his pregnant, time-traveling wife Claire back to the mid-20th century.  But Caitriona promises they will be reunited once again.

‘I think it’s safe to say there may be a reunion in the future… I think it’s not too much of a spoiler. It’s definitely an 18th century reunion,’ she revealed on Friday’s Good Morning America.