It’s an easy excuse to tell yourself you can’t do something because you’re tired. If only you were well rested, you could do something great.
The reality is, doing anything demanding where you need to peak performance means you will be tired often. But so is everyone else. What you do even when you are tired can give you a meaningful advantage over those that pack it in.
I overheard this listening to Hard Knocks and I always feel a bit more energized seeing how professional football get ready for the highest level of competition.