Watch: Canadian grandma holds a plank for 5 hours to break her own recordLifestyleOct 8 at 11:14 AM – Oct 8 at 2:27 PM3 outletsFox NewsGrandmother of 12 holds plank for 5 hours in record-breaking feat Oct 8 at 2:27 PMDaily HiveCanadian breaks record doing something for five hours most of us could never Oct 8 at 11:14 AMUPIWatch: Canadian grandma holds a plank for 5 hours to break her own record Oct 8 at 1:28 PM