"Spring cleaning" is all wrong --- who wants to be inside in the SPRING? (especially after a long, cold, gloomy winter?)
WINTER is the *perfect* time to do your so-called "spring" cleaning.
If you're already cooped up inside, why not make the most of it?
Cleaning (and minimizing) is also a great workout! Especially if you really get down and dirty, cleaning behind and under furniture --- move it around! It's like lifting weights, but with extra upsides! …