In this riff, we're going to be all over the place on the 6th string, so make sure your fret-hand is loose and limber! Use whatever fingering feels best for you, but of course feel free to use my fingering in the video as an example.
Just like we saw in Exercise 2, there are going to be a lot of palm-muted 3-note groupings here. Keep them tight so we can clearly differentiate between the muted notes and the non-muted notes.
Have it down? We're almost done. See you in Exercise 4!