Tired

A quick glance at some of the synonyms for "tired" reveals that there are lots of ways to say "I feel lacking in energy." I suspect it's a common human experience to be fatigued, worn out, whacked, flagging and bushed. It's certainly a common experience for me. I was reflecting the other day that I genuinely can't remember what it feels like to be refreshed, to feel not-weary. I wake up tired, spend the day in a state of tiredness and at some point in the evening am so tired that I can no longer do anything but go to bed. There isn't (I am fairly sure) any point of the day when, given some peace and a modicum of comfort, I couldn't easily fall asleep. I don't even need the peace and comfort - I've fallen asleep on a bus at 9 o'clock in the morning. So saying "I'm tired" doesn't really mean anything any more; it's as informative as "I'm breathing" or "I exist" - true, but generally able to be taken as read.

So when, as last night, I'm woken up at 2am by a vomiting child, how do I choose an appropriate synonym to describe my state at 10pm the following evening? I'm not sure that there's a single word or simple phrase that conveys the sensation of my head being both light and heavy, of my synapses being cotton-wool-balled to slowness; the effort of will to lift each leaden leg in turn up the stairs; eyes that burn until I close them and then burn until I open them; the disquiet of a noise that I can't hear distractingly invading my middle ear. Which word can convey the sense that there is so much to do, so much that will not be done, that tomorrow lurks only a few hours away with its own cargo of deeds and requirements and that sleep, sleep, no matter if it be brief or deep, will not, cannot hope to be enough?