I am a fit cougar – and even work out on my birthday to make sure I stay in such good shape 

A self-described ‘hot cougar’ has revealed how much time she spends in the gym to maintain her impressive physique. 

US-based fitness fan Niki shared a video on TikTok (where she is known as @nikkigrind03) detailing some of her workouts.

In the clip, which is captioned ‘What it takes to be a fit cougar’, Niki revealed that people sometimes struggle to understand her dedication to the gym.

She shared video footage of herself exercising and she overlayed these moving images with captions. 

The footage shows Niki’s frame, which boasts visible abs and defined arm and leg muscles, as well as her strength and athletic prowess.

Among the exercises the self-described ‘fit cougar’ does in the video are weighted squats and walking lunges. 

The first caption onscreen read: ‘People think I’m CRAZY for being at the gym on my birthday, but…’ 

Following this, the second caption says: ‘This is what it takes to be a fit COUGAR.’ 

The term cougar, which is believed to have originated from Canada, first started rising to prominence in the late 90s or early 2000s.

It refers to an attractive woman in her prime, usually in her 40s, who prefers to pursue younger men.

While Niki is married, according to her videos, she and her husband enjoy a swinger’s lifestyle.

And she prefers to get together with younger men, many of whom no doubt are impressed by her sporty physique. 

In another video posted by Niki on TikTok, in which she showcases her frame in a fuchsia bikini, viewers took to the comments section to compliment her look.

According to Niki (pictured), discipline in the gym is necessary if you want to be a ‘fit cougar’, so she even hits the weights on her birthday 

The self-described ‘fit cougar’ has a number of fans, some of whom commented on a recent video, complimenting her toned frame

One wrote: ‘My my my goodness. you look tremendous in hot pink.’

Another added: ‘Looks gorgeous Nikki, perfect body, you one super awesome women.’

Meanwhile, a third said: ‘U look amazing.’

Another agreed, adding: ‘Very nice looking.’

And a fifth simply wrote: ‘Stunning.’