Laundry Injuries

Is it possible to pull a muscle while folding laundry?

Last night while folding the third of three baskets of laundry, something went awry and I'm having some rotator cuff issues today. This is pathetic!

Another question for my readers:  

It's probably not a good sign if I feel like I somewhat got an arm workout while unloading the dishwasher right? Time to up the intensity of my fitness routine ? :)