How to: Properly Coil Your MacBook’s Power Cord
Apple’s white power brick is pretty handy, what with the attached hooks for coiling it up and packing it away. If you do it wrong, though, you’ll likely stress the cord and break it (or worse, create a fire hazard).
Instead of just coiling it up, make a loop so the joint between the brick and the wire isn’t bent. It’s simple, see video below.