Dear Eric: I work in an outpatient center where I, along with a few others, see multiple patients (lactating parents working on feeding their babies). On my lunch break, I choose to close the door, put my feet up and close my eyes for 30 minutes. Several times, a coworker had opened the door (when starting her shift, looking for an open exam room) without knocking, which caused me to startle, and we both scared each other.