He was forced to withdraw from the coxless four when he sustained a stress fracture of the rib, leaving him with a deflated lung, and could only watch on as the crew claimed gold without him.

BBC: Partridge is aiming for 2012 gold

Sinha observed that it's stress that is sustained, uncontrollable and overwhelming that is damaging.

CNN: STORY HIGHLIGHTS

Bales' attorneys have said that he suffers from post-traumatic stress disorder and sustained a traumatic brain injury during a prior deployment to Iraq.

CNN: SHARE THIS

But stress that is sustained, uncontrollable and overwhelming, in which people can't figure out options to solve their problems, wreaks havoc on us.

CNN: The importance of belonging