Your time is a medium to shape, not some sovereign currency you spend. As a medium, it is bound by your understanding of the universal contract it represents. Your body has innate knowledge of this as it possesses and maintains a number of rhythmic processes to manage stasis. Circadian rhythm, infradian rhythm, ultradian rhythm and diurnal rhythm. As an office bound adult, you dance to an entirely different clock which often amounts to spending time as your personal currency rather than a synchronised shaping of it defined by bodily states.

What's required here is awareness, not the abandoning of the post-industrial 9-to-5 clock we all follow. But, when the body cannot keep up, one must resort to shaping time (body focus) as opposed to spending time (worker bee focus).