When walking on a treadmill, people typically hit the tread in a "heel-to-toe pattern" and work the hamstring muscles on the back of the thigh, he explains. Whereas on a stair climber, "the pressure ...
On January 12, 2025, Yunjin shared her journey on the group's X account, posting a series of photos showcasing her experience with the stairmaster. In the first photo, Yunjin appeared ready to ...
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