Pacing is important no matter what you're doing. Try working in short bursts with rest periods in between. Also, vary your tasks so you're not using the same muscles for too long a period.
For more pacing help, see: How to Pace Yourself.
The About.com Guide to Housekeeping, Sarah Aguirre, has great tips for quick cleaning and shortcuts: Cleaning Shortcuts, Speed Secrets and Quick Cleanups.
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