Back in the days when school classrooms are of hardwood floors, every student got to polish the floor with these coconut husks called "lampaso" in Cebuano and Tagalog or "butso" in Waray. Schedules of the "sweepers" (that's the official name all right) are rotated so a student gets to spend countless sweat and muscle power and lose pounds in the process. The action is very manual:

1. Sweep the wooden floor first. If hard grime persists, wipe with wet towel and this is important, allow the water to dry (wet floor will be extremely difficult to polish)

2. (optional) Wax the floor, if you can afford it.

3. Work BAREFOOT. Starting at one corner, position your foot on (smaller) top of the husk. Then polish ALONG THE WOOD's GRAIN, using your weight as leverage. Also important, your free foot must be in the unpolished area to prevent your foot tracks from spoiling your work.

4. For balance, swing your arms in coordination with your legs. Work your way until you cover the entire floor.

5. Then, sweep the dirt that comes off the polish. If you're skillful, you may carry a broom with you. Heck, I know of some people who drag a rag with their other free foot for movement economy.
Now, that was real elbow, or rather knee grease.

Polishing with coconut husk is a vanishing practice. But I bet you they still are common in the public schools outside of the big cities of the country.