energetic physical exercises, often performed with a group of people to music, that make the heart, lungs, and muscles stronger and increase the amount of oxygen in the blood有氧健身法;有氧运动
She does aerobics.她做有氧健身操。
I go to aerobics (= to a class where we are taught such exercises) once a week.我每周去一次有氧健身操训练班。