I was never sure if it made sense to sleep if you're going to be underslept anyways, but then I read the science in "Take a Nap, Change Your Life."
The verdict? When you're tired, getting more sleep can never make you more tired. The disorientation coming out of sleep is from being in a deep sleep mode, but it passes quickly. From empirical testing - I take almost any amount of sleep now if running low, and it works better.
I haven't read the book, but I find drinking a coffee immediately upon waking from a nap clears the post-nap fuzzies pretty fast. Someone once told me coffee before the nap is better, since the caffeine takes around 20-30 minutes to have an effect, so it hits you right as you wake. I find the smell and taste of coffee stops me getting to sleep, though.
Sleep at 3:30AM, wake at 6:50AM, business call to States at 7AM. Groggy, but good call. Very solid planning.
Business research, tech stuff in the morning. Editing book. Get tired. Can't be tired. Go for run. Eat curry, bread, salad, fruit juice, iced tea. Wake up. Book is edited. Book is edited? Book is edited! Book is edited.
Why do I have 21 emails in my box? I cleared it two days ago, and I've been answering at least half the incoming email. Note: clear inbox after morning routine and most important thing tomorrow.
Happy. Tired. I wish I was strong enough to sleep 3.5 hours per night and do high level output without crashing, but I crash now. Answer emails tomorrow. I hate sleeping. Tired. Happy.
To be or not to be– that is the question: Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take arms against a sea of troubles And, by opposing, end them. To die, to sleep No more – and by a sleep to say we end The heartache and the thousand natural shocks That flesh is heir to – ‘tis a consummation Devoutly to be wished. To die, to sleep To sleep, perchance to dream. Ay, there's the rub, For in that sleep of death what dreams may come, When we have shuffled off this mortal coil, Must give us pause. There's the respect That makes calamity of so long life. For who would bear the whips and scorns of time, Th’ oppressor's wrong, the proud man's contumely, The pangs of disprized love, the law's delay, The insolence of office, and the spurns That patient merit of th’ unworthy takes, When he himself might his quietus make With a bare bodkin? Who would fardels bear, To grunt and sweat under a weary life, But that the dread of something after death, The undiscovered country from whose bourn No traveller returns, puzzles the will And makes us rather bear those ills we have Than fly to others that we know not of? Thus conscience does make cowards of us all, And thus the native hue of resolution Is sicklied o'er with the pale cast of thought, And enterprises of great pitch and moment With this regard their currents turn awry, And lose the name of action.—Soft you now! The fair Ophelia! Nymph, in thy orisons Be all my sins remembered.
Along with exercise and nutrition, sleep is one of the primary determinants of your happiness and wellbeing. If you don't get good sleep, you will not only be tired, but also pessimistic, unmotivated, lazy or even depressed.
Research has shown that self control is a limited resource that is greatly diminished when you're exhausted. If you don't get good sleep, you are less likely to be productive and stick to your good habits (such as exercise). You are also more likely to do things that you know are bad for you (such as eating sweets).
Good REM sleep plays a critical role in the development of long term memories. If you're trying to learn anything at all, you better make sure you get enough high quality sleep.
Proper sleep is also essential for maintaining a robust immune system. If you want to be happy, healthy, smart and productive, you have must make sure you get good sleep.
Do you think that your physical health and emotional wellbeing can be considered in isolation? Think again. They both come from the same body, and they both require that you sleep well.