I taught a course on the Psychology of Personal Change in college and there are papers that suggest that willpower resembles a muscle - in that it can degrade over time. But there are also other studies that suggest it can also be built up over time - like a muscle.
Would you say that doing pushups in the morning is a bad thing? Yes, you're more tired later in the day, but if you keep doing it, you'll get stronger and stronger.
Hmm, it seems like the research is pretty thin at present. I'm going to file this under "slightly more likely to be true than not" until I see more information.
Would you say that doing pushups in the morning is a bad thing? Yes, you're more tired later in the day, but if you keep doing it, you'll get stronger and stronger.