The pupil surpasses the master! Sylvester Stallone reveals he taught Demi Lovato boxing basics for camera after she appeared to knock him down

As Rocky Balboa, Sylvester Stallone has stepped in the ring with everyone from Hulk Hogan to Mr. T, but this week, he's had a challenger unlike no other before: Demi Lovato.

The star of The Expendables, Rambo and Demolition Man on Thursday uploaded an Instagram clip in which he was teaching the Heart Attack songstress the basics of boxing for the camera.

'The making of Rocky 8?' he wrote, along with the clip. 'Yo, You cannot totally believe everything you see, can you? NOT REAL But It was fun though…Demi is a good sport...'

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Getting strong now: Sly Stallone, 70, showed Demi Lovato, 24, the basics of boxing for the camera in an Instagram clip he uploaded Thursday

Multi-taskers: The two generations of A-listers got in a good workout while drumming up plenty of social media interest

Eye of the tiger: Stallone has taken a fatherly approach to helping Lovato learn boxing basics 

In the clip, Stallone instructed Lovato on timing and positioning wearing a pair of white gloves, while she wore pink ones.

A patient teacher, Stallone mimicked the course of events with the singer, as he not only instructed her on boxing basics, but also how to make it look good on camera.

The clip is the latest in a series featuring the stars, as Lovato Wednesday posted a short clip on her Instagram page in which the perennial action hero took a mock dive for the Confident singer.

Best in the world: There's arguably nobody better - in history - to learn boxing on camera from

On guard: Demi takes on a defensive posture as she spars with the famed Hollywood stalwart

With the clip, the Stone Cold singer wrote: 'Just knocking out Rocky (@officialslystallone) easy day at @unbreakableperformance.. #nobigdeal #boxingLEGEND #thenewcreed #ROXYBALBOA #Rockysdaughter #unthinkableatunbreakable.'

In the sequence, which was shot at the West Hollywood training facility Unbreakable Performance Center, the Camp Rock beauty threw a series of few air punches before finally making contact with Stallone's chin.

'I slipped! I slipped. I swear it was an accident,' the Let It Go singer told the silver screen tough-man.

Death blow: Lovato follows throughout with a shot that Stallone takes a dive for 

In an Instagram clip earlier in the week, Lovato, who has dealt with body image issues, showed off her new-found fondness for martial arts as a device to keep her sound both physically and mentally.

Along with a clip of her physically engaging, she said that 'Fitness and health is really important to me because I perform my best whenever my mind and body is at its best.

'I really love training' in Jiu Jitsu, Lovato said, adding that 'it’s something that’s very new to me but also it’s something that I’m already passionate about.'

The man, the myth: Sly, who's been nominated for an Oscar on three occasions, was seen strolling in LA in September 

Workout: The singer said she's turned to martial arts as of late to stay in top shape. The singer was snapped in September in Hollywood for a promotional event

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