Fitness guru Joe Wicks has a cult following across the nation with his morning routines during the coronavirus lockdown.But while the super-fit TV host has inspired legions of struggling parents and youngsters with his PE class workouts, he has some competition for the role.Four-year-old Dumfries girl Gracey Struthers has been muscling in on the action to steal the telly guru’s glory.For the youngster’s Joe Wicks-style fitness routines have become a big hit across the North Sea in Norway.Gracey and her postman dad Jamie have taken to filming videos based on the TV fitness specialist’s routines in their Dumfries home to reach a new audience in the Scandanavian nation.They have found a legion of fans amongst the kindergarten class at the