Cash (savings in this case) is an asset.
However, your (cash) savings interest should really never be greater than the rate of inflation. Banks would be losing money on you in that case. Cash is a bad place for your money when there are inflationary pressures. (But beware the gold bugs!)
If you want to have your money work for you, figure out a handful of *different* asset classes (stocks, bonds, mutual funds, metals, commodities, real estate, foreign currencies, and yes, even cash) that you'd be interested in and follow them. As things change, adjust your mix to take advantage of what you believe is the future trend within your risk tolerance.