Man lies in bed
To rest his head
Upon the pillow
Of the man
This poem speaks for itself; the energy of man comes from the sleep which he acquires. As such, the reader can interpret that the 'pillow' must surely represent the ambitions of man, which he must put his mind to before any positive outcome - surely symbolised by the word 'energy' - can be achieved.
All of the above is about to 'transpire'.