Statement
You should not drink. You must take care of your health, Ramesh tells his friend Ravi.
Assumptions
I. Ravi will need to Ramesh's a advice.
II. Ramesh knows the ill effects of drinking.
III. Drinking is not good for health.

Anybody advises anyone with the assumption that his advice will get proper attention from the one who hears. Without assumption so, giving advice makes no sense. Hence, Assumption I is implicit. Assumption II is implicit of a thing, then he assumes that he knows about it. Assumption III is very much valid, otherwise the statement becomes meaningless.