Meaning of "cleavage"

[all potted out]

"Exercising using hand weights is a good way of toning the arm, shoulder, and pectoral muscles. Toning the pectoral muscles can improve a woman's cleavage."

What does cleavage mean in this context?

[Pamela]

Hi Apo
cleavage stands for the cleft between a woman’s breasts in your example

[Yankee]

Hi apo

I'd say the sentence also suggests indirectly that a woman's breasts will increase in size.

Amy
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Amy
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ESL teacher, translator, and a native speaker of American English