[StanislavPetrov]

That entirely depends on your timeframe. If you are an older person at or near retirement and planning on using your investments to pay for your living expenses you are much better off going into cash and low risk investments like treasuries. If you plan on having investments for the next 40+ years your outlook is totally different, and so should be your trading strategy.

[swandog46]

That's entirely different from trying to time the market upturns and downturns. If you need less risk and more liquidity then you should adjust your stocks/bonds asset allocation to match your risk tolerance and life goals, but within each bucket you should buy low-cost diversified index funds and hold them.