Some previous studies have suggested that challenging your brain with mentally stimulating activities might help.

VOA: standard.2010.06.17

"I think on balance it will be positive in the sense that it is stimulating a recognition beyond the shores of North America, that this needs to be dealt with better."

VOA: standard.2010.04.01

Like the Bank of England, the U.S.Federal Reserve has all but exhausted one of its most powerful tools for stimulating the economy -- lowering the key interest rate that banks charge to lend to each other.

VOA: standard.2009.03.18

New research has found that mice with cancer are better able to fight off the disease when they are in complex, stimulating environments, with lots of toys and other mice that they interact - and compete - with.

VOA: standard.2010.07.14

What we ought to be doing is pursuing the kind of broad-based prescription for recovery and stimulating this economy that has always worked: fiscal discipline in Washington and tax relief for working families, small businesses and family farms."

VOA: standard.2009.08.02

The economy needs help. But rather than stimulating the economy by providing an improved incentives to work and invest, we have been devoting trillions of dollars in taxpayer money to expanding and creating permanent long-term government spending programs and income-redistribution mechanisms,".

VOA: standard.2009.04.03