Even with the stock market hitting new highs, there are plenty of industries with beaten-down stocks that could benefit from an improving economy over the next five years.Krispy Kreme (DNUT 3.02%) stock is down 67% over the past year due to weak financial results, but the stock could soar if management's moves to improve profitability pay off.Lululemon Athletica (LULU 0.30%) stock is trading 57% off its recent highs over slowing growth and concerns about competition, but its recent financial results indicat ...