Many people spend decades saving for retirement with the expectation that their investments will continue growing once they stop working. Unfortunately, history shows that markets do not always cooperate. There have been periods when stocks delivered little or no meaningful growth for years, creating what investors often call a “lost decade.” For new retirees, this scenario can be especially dangerous because they are no longer contributing to their portfolios and are often withdrawing money at the same time. Here’s what you need to know about this to stay prepared.