Enabling feed tracking provides real-time field updates from objects. If some change has taken place, it will be reflected on your Chatter feed, especially if you are following that record. Only the system administrator can enable feed tracking for standard and custom objects of an organization. To enable the feed-track option, follow the path Name | Setup | Customize | Chatter | Feed Tracking. We will enable feed tracking for the Contact object by selecting the Enable Feed Tacking checkbox, as shown in the following screenshot:
You can also display the activity of a feed for related objects. To do this, select the All Related Objects option at the bottom of the page:
