Populating an RSS feed with full post content? I'm using Matrix to give loads of flexibility with blog posts, but it means things aren't as simple when it comes to RSS than if just using a single field called Body.

How is everyone else dealing with this?

EDIT: As Christian points out, I'm party asking what is best practice for RSS feeds. But I'm also exploring the extra flexibility or complexibility offered by using Matrix for blog post content. Best practice is constantly evolving, and I think it quite possible best practice for creating an RSS feed using Craft may turn out to be different best practice to feeds generated by something else, simply because the flexibility is there (just as long-form content is becoming more commonplace as CMSs start to deal with it better). For example, using Matrix we can pick and choose which types of content are included within the feed to a much greater degree. Or do we just say, no, a feed should contain this, this and this and you shouldn't mess with that, no matter what the tool?
I would use a lead paragraph field that you could then call into the RSS feed. Or you could add a post summary field. You could then call that whenever you need to, RSS or otherwise.