Breadth

(Today's prompt from Napowrimo.net was to write a riddle poem. I can't say more; otherwise, I'll give away all the clues. Here goes.)

Breadth
    In a world where time equals money,
    I am a wealthy misfit.
    I reside on air,
    thrive on demand for a slower pace,
    away from the tyranny of the planner.
    I swell the belly downward, the ribs outward.
    I cause the breasts to rise and heave
    as I force suspension.
    I coax you into savoring the tension,
    relaxing into the pause,
    and then the release.
    Breasts that once heaved sag.
    Ribs that strutted outward compress,
    and finally the belly shrinks into the naval
    shriveling in relief.