In Exercise 4, we have the section of the song where the tempo increases from 127bpm to 148bpm. In the context of the song, once Exercise 4 is finished, you'll then proceed to play Exercise 1 and Exercise 2 at the new speed of 148bpm.
With the exception of a few brief upstrokes, we'll mainly be using downstrokes in this exercise. When you come to any pair of sixteenth notes however, play a quick downstroke followed by a quick upstroke. And don't forget to keep that palm muting nice and solid!
Do you have all the exercises down? Then head on over to the next page for the backing track!