exercise bike; stationary bike
Wasei-eigo from 'fitness bike'. Refers to a stationary exercise bicycle. Often synonymous with エアロバイク, though フィットネスバイク may imply a broader range of fitness-oriented stationary bikes.
wasei-eigo (Japanese-coined English), from fitness bike
See also: エアロバイク
I pedal the exercise bike for 30 minutes every morning.
I bought a new exercise bike and started working out at home.