Workout Intensity - The Shovel

[Heretic]

The Rule of Three can be very useful:

Rule of Thirds

I came across the “Rule of Thirds” for perspective on training. You should feel good about a workout a third of time, OK a third of the time, and lousy a third of the time. If you feel lousy all the time you are fatigued. If you feel good all the time you are not training hard enough. Something to think about after having a workout you could not finish, or you just barely finished.