If you are like me you may have a tendency to sit at your computer with one foot tucked under you. PRO-TIP: Make sure it is not asleep when you decide to stand up. That tingling is not your body being cute, it's trying to prevent this:
"But I don't have my computer next to a cliff..."
Don't be a fool! The descent will find you, and will strike suddenly, leaving you crumpled on the floor, a disoriented, undignified, dishevelled mess - assuming it did not kill you by having your head strike something (possibly a desk-y corner, or a cat) on the way down.
BE SAFE. Follow sitting protocol and beware all tingly feelings in your extremities.