The CEO hires a woman to slap him every time he's on Facebook. Elon Musk's reaction

Maneesh Sethi, founder and CEO of wearable device company Pavlok, an Indian American descent, once hired a woman on Craigslist to slap him every time he opened Facebook, which impressed Elon Musk.

In 2012, Mr. Sethi realized he wanted to increase his productivity, so he took to Craigslist looking for someone willing to slap him every time he opened Facebook when he was supposed to be working. “I hired a girl on Craigslist to slap me every time I used Facebook,” she explained on her blog, adding that the results of her experiment were surprising. According to Pavlok's CEO, he hired a woman named Kara for $ 8 an hour to slap him every time he walked away from his department, and his productivity soared to 98%.

A photo of Mr. Sethi getting slapped by Kara for opening Facebook recently resurfaced on Twitter and caught Elon Musk's attention. Tesla and the CEO of SpaceX responded to the image with two fiery emojis. The emoji is used to indicate something beautiful or majestic.As CEO of Tesla and SpaceX -- companies that have turned him into one of the world's richest men -- Elon Musk has a lot going on. Little wonder, then, that he has some tricks of his own to increase productivity. Here is a look at some productivity rules that Mr Musk once shared with his employees in a letter.