Why the stock market's recent volatility is "healthy"
Investors are bracing for more ups and downs on Wall Street after a volatile week for U.S. stock markets. On Friday, the Dow swung up and down, to finish on the plus side, adding 330 points one day after suffering a 1,000-point loss. CBS News senior business analyst Jill Schlesinger joins "CBS This Morning: Saturday" to discuss why the recent tumult is actually normal.