3.1.6 - Sleep-wake and infradian rhythm research

3.1.6 Research into the circadian sleep-wake cycle and infradian rhythms.

Use - sleep-wake and infradian rhythm research to connect the rule to the data and decision in the question.

This matters because - sleep-wake and infradian rhythm research determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - sleep-wake and infradian rhythm research to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Sleep-wake and infradian rhythm research is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.