This is week 5 which means you have two new strength workout. Monday was Chest, Shoulders & Triceps and today was Back & Bicep.
Tony is very creative. There are at least 12 different bicep exercises in this exercise of 18. Kicks your biceps like crazy and then the last set is a super set of 3 sets of 4 working from a heavy weight to a lighter one.
My friends and I have been using the phrase “Just push play” a lot. When you don’t want to do it, the key is just to get there and push play. You can do as much as you can and in general you’ll get through the workout once you get started.