David Goggins is a former US Navy SEAL, ultramarathon runner, and author of the 2018 memoir Can't Hurt Me, whose 'stay hard' mantra turned him into a cult figure of fitness motivation. Short clips of his speeches and quotes about him became staples of gym edits on TikTok and Instagram, where creators pair his no-excuses persona with footage of brutal training. The 'savage' label stuck because his story, from overweight exterminator to elite endurance athlete, reads like proof that suffering can be a choice.