Most of the videos offer an easy formula using numbers. For example, in one video, a TikTok user said "the ultimate summer ...

That's especially true if you're comparing a stair climber to walking on a treadmill. If you have a relatively high fitness level to begin with and are looking for the most efficient workout ...

One minute, you're just stepping, listening to your favorite true crime ... of group fitness at Anatomy with the StrongFirst Kettlebell certification. Ahead, find out why stair climber workouts ...