present participle of make good time

Too much inactivity makes one less mentally acute.

A policy of revenge will lead to counterretaliations rather than peaceful resolutions.

Alternative form of a spoonful of sugar helps the medicine go down

Too much focus on one's career may lead to one being uninteresting company. / Too much hard work and not enough leisure time can be unhealthy.

Alternative form of what doesn't kill you makes you stronger

Hardship builds moral character.

A person who goes to bed early and wakes up early will lead a more successful life.

(in the negative) To fail to make head or tail of; not to understand at all.

(idiomatic) To bother or unsettle a person; to put someone on edge.