A simple test exercise that highlights how likely you are to develop a back injury, or if you already have one, what the underlying cause could be.
As a guide, you should be able to achieve 60 seconds on either side comfortably. A big difference between left and right (more than 10 seconds) is a MASSIVE RED FLAG and should be addressed BEFORE you deadlift or squat seriously.
A lack of lateral stability in the lower back can also impact shoulder, hip and knee health as well.