Do you have ‘office bum?’ Nutritionist sounds the alarm on rise in flat posteriors — here’s what you can do

This could be a danger to your health — no butts about it.

A nutritionist is sounding the alarm about “office bum,” saying a flat posterior could pose serious medical issues.

Expert Annabelle Smith says shapeless booties are extremely common due to our sedentary lifestyles, with many workers sitting uninterrupted for up to 9 hours at a time.

“The combination of not having an active life outside of work or exercising the glutes specifically — often combined with a poor diet -— will see even the best posterior suffer in terms of a flat and untoned bottom,” Smith explained in an interview with The Mirror on Thursday.

She claimed that big and bountiful butts are idolized in our culture, leading to anxiety for those who aren’t blessed with such a posterior.

However, a flat “office bum” doesn’t just pose aesthetic problems.

According to The Mirror, it “can lead to more dangerous conditions” including “dead butt syndrome.”

Healthline claims that condition “results from the gluteal muscles essentially ‘forgetting’ their main purpose: supporting the pelvis and keeping your body in proper alignment.”

The syndrome can cause stiffness not only in the glutes but in other pants of the body, causing chronic pain.

Smith says you can build up a pert posterior — but you’ll have to work your butt off (or, more accurately, on).

“Get your muscle up, keep body fat at a reasonable level and stay active,” she implored, saying sitting at a desk job was no excuse for a flat behind.

Meanwhile, other experts told The Mirror that squats, side planks and lunges will specifically help strengthen the glutes and build up your bum.

A move known as “the monster walk” will also help.

“Begin by placing a resistance band around your ankles and positioning your feet slightly wider than hip-width apart,” an expert from the UK fitness company Mirafit told The Mirror. “Proceed to take small steps forward at a slow pace. You should experience a sensation of burning and activation in the outer muscles of your glutes.”