Robert Bunsa was just 24-years-old when he drowned during a contest to see who in a bachelor party could hold their breath underwater the longest. He suffered shallow water blackout, which happens when swimmers hold their breath for too long.
This type of drowning is shockingly common; people hold their breath too long, lose consciousness and drown, which often goes unnoticed by other swimmers. Water safety expert Jim Spiers told Inside Edition that holding your breath underwater is dangerous. Instead, slowly exhale and come up as soon as you need to breathe.