What are some cardio machines at the gym?
Gyms often had a variety of cardio machines, including the treadmill, elliptical, rowing machine, stair climber, and spin bike.
### Instruction: What are some cardio machines at the gym?
### Context: 
### Answer: Gyms often had a variety of cardio machines, including the treadmill, elliptical, rowing machine, stair climber, and spin bike.</s>