Tired

Do you ever have those nights where you fall asleep and then like 5 or 10 minutes later wake up and your wide awake? Had one last night. Two lousy nights sleep in a row. I am always amazed by the human body. I really think that we as health professionals are quite clueless when it comes to the intricate workings of the body. I have given literally tens of thousands of shots. I get people numb with just one shot almost every time, but every now and again I get a patient who seems impervious to any attempt I make with a needle.  So if your dentist is having a hard time getting you numb be kind to him/her!