She regularly documents her workouts on social media, giving hints and tips to fans.
The 31-year-old reality star is seen at the gym seemingly suffering the effects of food poisoning as Peterson tries to put her through her paces.
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Having an off day: Khloe Kardashian struggles with one of her workouts with Gunnar Peterson in a video she shared on her website on Monday
Khloe is seen in all black athletic gear as she works through some exercises but is filmed saying ‘I feel so sick’ before bolting for the bathroom.
Her personal trainer tells cameras: ‘That’s not the workout. That’s fried food and room temperature ranch dressing,’
He adds ‘One guy’s opinion…’
Uh-oh: As he puts her through her paces Khloe says she suddenly feels ‘so sick’
She’s gotta go! The reality star is seen making a run for it to the bathroom in the middle of her workout
Peterson is then seen showing Khloe another move with a Medicine Ball before another set of repetitions but it all gets too much for the KUWTK star who looks pale, clammy and exhausted.
He asks the star: ‘Did we deviate from the core diet curriculum when we were away with the kids?’
‘Yeah but that doesn’t count,’ Khloe retorted as she mentioned the one chicken finger she’d eaten and added ‘why would that make me throw up?’
The fitness pro then says he think it must be food poisoning.
As she disappears into the toilets Peterson tells the camera ‘That’s not the workout. That’s fried food and room temperature ranch dressing’
Struggling: The 31-year-old battles through some of the moves her trainer tells her to do
When Khloe finally gives up on the workout session, sitting down and patting her sweaty face, Peterson says ‘she threw in the towel on this one’
He then explained to viewers how important it is to ‘listen to the body all the way through and make the right choices.’
Khloe shared a clip of the feature on her Instagram on Monday and captioned it: ‘Everyone has off days and I’m no different!!! See how I handle the gym in my new Khlo-fit vid on my app! Even with food poisoning’
‘Why would that make me throw up?’ When Peterson says she has food poisoning Khloe denies she screwed up her ‘core diet curriculum’
‘She threw in the towel on this one’: Peterson explained that Khloe gave up on the workout but that ‘you have to listen to your body’