Are these stocks too risky to take a chance on today?Investing in struggling stocks that are also heavily shorted can be an incredibly risky move. But if these types of stocks are able to turn things around and prove their doubters wrong, the upside can also be significant. It's not a suitable investment strategy for most investors, but if you have a high risk tolerance, there are three potential contrarian plays to consider.Medical Properties Trust (MPW -0.42%), Beyond Meat (BYND -3.78%), and Plug Power (P ...