Watch the Alternate Picking: Level 3 online guitar lesson by Chris Buono from Guitar Gym: Alternate Picking Workouts

Continuing with the "pivot" approach where the pick attacks the string on the outside or inside borders you'll play through the same 5th position A Major scale in 5ths in what I call "turnaround motions" where you play the intervals in one direction when ascending the scale and then the opposite direction when descending. This sets up a situation where you're picking on the outside of both adjacent and non-adjacent string pairs on the way up and then insides on the way down. Be careful: When it comes to picking on the insides - that's a little trickier, especially for those non-adjacent string instances.