Instead of tasking its members to do at least 70 crunches (up to a maximum of 115), the USMC has been offering the option of planking to demonstrate core strength, with a hold time of one minute, ...

A 62-year-old former US Marine has broken the world planking record with a time of eight hours, 15 minutes and 15 seconds. George Hood set the record for The Longest Male Abdominal Plank in ...