This exercise is a good test. No matter what style of music you play. If you can’t do it clean, you need to start practicing. Bending is considered a basic technique, but you might find this exercise not that easy at all. Starting from the basic idea, look for the more advanced variation around 3:35.
Backing track jam starts at 5:53 . First practice without the track and really listen. Once you get it down try the backing track to make it more fun and musical.
I hope you enjoy this video and exercise! Let me hear your thoughts.