"There is a far greater sense of urgency than there was three weeks ago about the necessity for the eurozone to address its problems and there is pressure on the eurozone from across the international community, " he told the BBC.

BBC: IMF: Global economy needs collective action now

His approach involves taking a muscle biopsy from a patient's thigh and then growing the tissue sample in the lab for three weeks until there are 600 million to 800 million of the myoblast cells.

FORBES: Using Thigh Muscle To Fix The Heart

From there the market has usually moved modestly lower for the next three weeks (hitting the low for the month on the sixteenth trading day).

FORBES: Markets Follow Traditional January Script ... So Far

There is talk it will be like that for the next two or three weeks and come the first week of February we should be on target for me to be able to walk unaided.

BBC: Webber targets return in February

Some friends and I predicted that the gym would be packed for the first three weeks of January, and drop off from there.

FORBES: Health Tips From the Echo Boom Expert

But in fairness, you know, we're talking about Pennsylvania and all the, you know, talking about what's up - at stake in three weeks, but there really is a primary going on right now and that is for those uncommitted or at least, undeclared superdelegates.

NPR: Political Junkie: Three Weeks to Pennsylvania

As I discussed a few weeks ago, there were spring corrections in each of the past three years, with the high for all of 2011 occurring on May 1.

FORBES: The Week Ahead: Put The Odds In Your Favor Now