Combination hydrocodone drugs usually also contain acetaminophen, the active ingredient in common pain products such as Tylenol.

MSN: FDA staff says Zogenix painkiller has abuse risks

"The cultural norm is to sit, which is why sitting is the smoking of our generation: everyone does it, and it's so common, asking someone to be active definitely seems weird to everyone I ask, " she says.

CNN: Let's take a walk: A push for meetings on the move

There are various tests of active involvement, but the most common is working at least 500 hours a year.

WSJ: Are You Ready for the New Investment Tax?

It is so contagious, that very few unimmunized individuals escape this common disease when they are exposed to someone with active chicken pox.

FORBES: Why Chicken Pox Can Be So Dangerous

Investigators are examining whether the companies overstated the benefits of exotic-sounding ingredients while understating the role of caffeine, a common stimulant that industry critics believe to be the main active ingredient, that person said.

WSJ: Energy-Drink Makers Face New York Probe

Other common names for market timing include opportunistic investing, sector rotation, active asset allocation, top-down allocation, bottom-up allocation, global modeling, algorithmic positioning, defensive investing, and the list goes on.

FORBES: Anything But Market Timing

It might seem like common sense that inactive people have a greater risk for heart disease than active people, but a new study has measured the risk in terms of time spent in front of a computer, according to the Deccan Herald.

FORBES: Four hours on your computer doubles risk of heart disease