Posture is not a single position you “hold” all day. It is a dynamic expression of how your joints, muscles, and nervous system share work as you sit, stand, move, and rest. The quality of those daily habits determines whether your spine feels supported or strained. Small, repeatable choices—how you set up your desk, the way you breathe, the shoes you wear, the microbreaks you take—compound into either resilience or recurring aches. The good news: a handful of practical routines can reduce tension, improve alignment, and protect your back and neck for years to come.