All of us have a piece of tissue under our tongue called a frenulum that holds the tongue to the floor of the mouth.  Very early in our development in the womb, the tongue separates from the floor of the mouth, and the frenulum that remains varies in size and tightness from person to person. …

A concussion is like a bruise that doesn’t fully drain.  You know those bruises that turn yellow, green, or even black and just hang around?  Concussions are like that, but they are underneath the skull bones or deeper in the brain.  Over time they harden a bit, and the flow through them gets muted. This…