Personal Trainer Corrects Stranger's Squat Form at Grocery Store

Certified personal trainer and biomechanics enthusiast Jake Concentric was escorted from a Whole Foods on Saturday after physically adjusting a stranger's knee position while the man was bending to pick up a can of chickpeas from a bottom shelf. 'His knees were caving inward,' Concentric explained from the parking lot, where he was waiting for his ride. 'Classic valgus collapse. If I hadn't intervened, he could have -- well, he would have been fine. But his form was terrible.' The stranger, identified as Richard Morrow, 58, a retired postal worker, reported that he was 'just getting chickpeas' when a man in athletic wear grabbed his knees and pushed them outward while shouting 'drive through the heels.' 'I thought I was being attacked,' Morrow said. 'Then he started talking about something called hip external rotation and I realized he was just one of those people.' Concentric has been providing unsolicited movement corrections in public for approximately three years, a practice his wife calls 'a compulsion' and his colleagues call 'a liability.' Previous incidents include adjusting a jogger's arm swing at a crosswalk, critiquing a construction worker's lifting technique through a chain-link fence, and approaching a woman carrying a toddler to suggest she 'engage her core and hinge at the hips.' 'The world is my gym,' Concentric said. 'Every movement is either correct or incorrect. I can't just watch someone destroy their ACL reaching for chickpeas.' Morrow has declined to press charges but has requested that Concentric 'never speak to him or any member of his family about knees ever again.' Concentric has agreed to this condition but noted, privately, that Morrow's standing posture in the parking lot was exhibiting 'significant anterior pelvic tilt' and that it was 'taking everything in him not to say something.'