We are all familiar with the concept of SIP, all the more so after the Mutual Fund Sahi Haicampaign. But whenever we think of systematic investment plan, we think about equities. The reason is, equity market is relatively more volatile than debt and the concept of purchase cost averaging is applicable more to equities. If the market level comes down, you benefit by purchasing at a lower level which you may not have done but for the discipline of SIP.