Question

rest and relaxation
fill-in-the-blank/short answer
8 some people need a minimum of ____ hours of sleep to function well while others need ____ hours.

Explanation:

In the context of health and sleep requirements (related to Medicine and Health, a subfield of Natural Science), it's a common knowledge that some people need a minimum of 7 hours of sleep to function well, while others might need 9 hours (these are typical ranges for adult sleep needs, though there can be variations, but 7 - 9 is a widely recognized range for adults; for different age groups or individuals, it can vary, but this is a common fill - in for such questions).

Answer:

Some people need a minimum of $\boldsymbol{7}$ hours of sleep to function well while others need $\boldsymbol{9}$ hours. (Note: Other common valid ranges could also be acceptable, like 6 - 8 or 8 - 10, but 7 and 9 are a common pair for adult sleep needs in general knowledge related to health.)