aerobics
aer·o·bics
/ˌeɚˈoʊbıks/ noun
[ noncount ] : a system of exercises often done by a group of people while music is playing : a system of aerobic exercises
an instructor teaching aerobics
— often used before another noun
an aerobics class
; also [ plural ] : aerobic exercises
She does aerobics three days a week.
