Walk to get fit.

Meaning: This means to go for a walk to become physically fit. It's like saying, I'm going for a walk to become physically fit.

Choice of Words: "Walk" is a verb that means to move by putting one foot in front of the other. "To get fit" means to become physically fit. When you put them together, "Walk to get fit" means to move by putting one foot in front of the other to become physically fit.

Alternative Expressions

Related Expressions