Human: What are the benefits of a stair climber over a treadmill? Assistant: 
The main benefit of a stair climber over a treadmill is that it provides an aerobic workout with more resistance. A stair climber also allows you to move at your own pace, while on a treadmill you must stay within a set speed range. Additionally, stair climbing can provide better cardiovascular health and increased strength in the legs and glutes. Stair climbing can also help build up leg muscles, which can be beneficial for runners. Finally, stair climbing can be done indoors or outdoors, whereas a treadmill is limited to indoor use only.