It's hard to do well in the markets when interest rates are rising. The reason, as every old-timer knows, is that interest rates (via bonds, notes, bills) are always competing with stocks.
When you buy a Treasury bill or a note or bond, you’re facing only one risk -- loss of purchasing power. But you can be sure of one thing, you're going to get your money back. Sure, you may be paying more for a loaf of bread ten years from now when your 10-year note matures. Worried? Then stay closer to home -- buy a five year note or a two-year note. Still worried? Then stick with 91-day Treasury bills.