Joe Wicks was left nursing a sore head after accidentally bashing into a wall during one of his live PE workouts.
The fitness guru came a cropper as he was leading his followers through an exercise routine while dressed as the Honey Monster.
Wicks, who was wearing a big furry head and fluffy shoes, had announced that the last move would be the “silly billy”, which involves sliding from side to side across the room.
But things went wrong when he skidded a bit far and smashed straight into the slanted wall.
Groaning, he fell backwards and lay on the floor for a second before recovering his composure.
“I’ve cracked it!” he said.
He then posted a message to a coach and performance therapist, saying: “Sorry mate I’m literally one injury after another for you to deal with lol. I’m gonna need needles in my head. Come out looking like hell raiser.”
The star’s celebrity friends saw the funny side of his bump, with singer Olly Murs posting a string of crying with laughter emojis and TV star Gaby Roslin posting: “And again Joe your Fridays make my day.”
Wicks has charmed the nation by becoming PE teacher to all the children off school during the coronavirus pandemic and raised more than a million for Children In Need with a 24-hour exercise marathon.
His home workouts, aimed at the whole family, were such a hit that they saw Wicks receive an MBE in the Queen’s 2020 Birthday Honours for services to fitness and charity.
Watch: Joe Wicks’ daughter is his biggest supporter in workout video