Justin Agustin on Instagram: "Poor standing stamina often stems from prolonged periods of inactivity, as muscles weaken due to disuse. Being sedentary exacerbates this, leading to reduced muscle strength and endurance, particularly in the core, glutes, and lower body. These muscles play a crucial role in maintaining posture and stability while standing. Regular exercises targeting these areas, such as the kitchen counter routine demonstrated in this video, can effectively strengthen them…
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