Sleep __, Actions to Improve One's Slumber

This page is the CodyCross answer for the clue below from Making a Documentary, Group 1508, Puzzle 4 (Editing Software).

Question is: Sleep __, Actions to Improve One's Slumber

and the answer is: HYGIENE

Word Meaning:

HYGIENE — The science of health, its promotion and preservation.

Definitions from Wiktionary.

Sleep __, actions to improve one's slumber — CodyCross Answer | CodyCross Solutions