Fitness model Lisa-Marie Zbozen demonstrates squat-lift exercises from home, but doesn't realise the other squat happening in the room behind her.
Like a true pro, she simply continues on with the workout techniques.
The man in the video is believed to be Sean Light, the developer of a popular fitness site page.
Which has lead many to believe that this video is nothing more than a staged viral to get people’s attention to promote his site.
If it is true, his plan has worked as the site claims it has received 500million video views and more than 500,000 online followers.