Why do I often feel more energised at the end of a work week than at the start of a weekend?

This is one of the framework’s most counterintuitive — and most useful — findings. The reason you feel energised on a Friday is not because the weekend is approaching; it’s because you’ve spent several days in active engagement, cycling between animation and flow states, and you’ve accumulated the motivational momentum that produces. The reason Monday feels heavy is not the prospect of work ahead — it’s the consequence of a day or two of relative inactivity, which produces ennui. The research shows consistently that sustained inactivity degrades motivation, while sustained engagement builds it. Most people have the story exactly backwards.