Buff former footballer Rio Ferdinand left fans speechless with his incredibly difficult-looking "warm up".
Chris Varnavas, who founded Athletic Development Club, shared a video to his Instagram story of Rio, 42, warming up with huge 45kg weights.
Wearing a matching khaki workout look, Rio's muscles bulged through his long sleeved top.
The broadcaster showed off his routine to his 4.6 million followers as he reposted the video to his own Instagram story.
Chris can be heard counting the reps and giving Rio encouraging words as he works with the heavy weights.
Rio reposted a second video to his story, where he tackles drop sets.
As the video starts, Chris says : "Alright straight in, let's go. Easy work."
Offering reminders to "keep your feet on the floor" and "squeeze your chest", the pair showcase Rio's workout routine.
Rio's wife Kate Ferdinand recently made headlines as she spoke out about how nervous she was to take son Cree to a baby class.

The new mum welcomed baby Cree alongside her husband in December 2020.
Kate has revealed that her son was delivered via a traumatic cesarean.
She confessed that she couldn’t walk for over six weeks after having the surgery back in December.

The TOWIE star married her husband in 2019, the pair were wed in a beautiful ceremony in Turkey.
The star-studded event even included a performance by Ashanti.
The romance between the two bloomed after Rio sought out permission from his children, Lorenz, 14, Tate, 12, and ten-year-old Tia.
The former footballer's wife Rebecca had tragically died from breast cancer.
After meeting Kate a friend's BBQ and getting permission from his children, he began wooing the reality TV star.
She focused her energy on building relationships with her three step-children as she parted ways with her agent and embraced the role of step-mum.