India, Feb. 5 -- It's a sight often seen in 'gym fail' compilations: a seemingly fit weightlifter completes a massive rep, only to go limp and collapse seconds later. While it looks alarming, Dr Jay Jagannathan, a neurosurgeon at the Jagannathan Neurosurgery Institute in Michigan, has said that it isn't a sign of weakness - it's a specific physiological glitch. Also read | Cardiologist reveals why people in 30s, 40s are collapsing during workouts

Taking to Instagram on February 4, Dr Jagannathan broke down the science behind these sudden collapses, identifying the culprit as a vasovagal response. According to Dr Jagannathan, the phenomenon is a sudden loss of consciousness triggered by the body's own nervous system - when a lifter is und...