SCHOOL of Rock star Jack Black shocked a Glasgow yoga class when he turned up unexpectedly this week.
The Hollywood rocker, in town to play a gig with his band Tenacious D, was reportedly left soaking with sweat after the workout on Monday.
The day before he took the stage at the SECC for a gig he showed up at Movement Studio for a lesson in Ashtanga Vinyasa, an intense form of yoga.
Yoga enthusiast Black, who has also starred in King Kong and Shallow Hal was totally focussed for the lesson, which lasted almost an hour and a half.
Instructor Siobhan Fitzgerald and the 10 other member of the class were shocked when the star and two two friends turned up.
Ms Fitzgerald said: “I thought I recognised his face as I passed him to go into the class.
“It was only when my students came rushing in excitedly that I realised who he was.
“He shouted into the room and asked if I would mind him coming in to take part.
“He said he’s seen my website and I asked him if he’d done yoga before, and he said he had.
“But I don’t think he or his two friends had ever done this type of yoga. Afterwards they looked like they’d got a bit of a fright!
“It’s quite a dynamic class.
“Jack was focussed and put 100% effort into it.
“He’s well-built and some of the postures are quite challenging, so I was adjusting hinm and helping him at times.
“He’s definitely used to chanting. Everyone’s heads were turning when he started and I had to get them all to re-focus.
“There was another class coming in immediately after and someone said to him that he looked like he’d been in a sauna.
“All Jack said was ‘that was intense, man’ but think he enjoyed it.
“Someone said later that he likes to do yoga before playing a concert, so I hope it helped him the following night.
“Yoga relaxation definitely helps to focus the mind, as well as giving the person a lift and making them feel more confident!”