Why Telling People To “Sit Up Straight” Is Bad Advice

I get asked all the time: “What’s good posture?”

And honestly, it’s not a simple answer. If it were, none of us would be slouched over laptops or hunched in meetings. Most advice we get is a variation of: “Sit up straight!” and yet, forcing yourself tall often does more harm than good.

Here’s why.

Posture Isn’t a Position, It’s Space

Posture isn’t about forcing your spine into some rigid, textbook “perfect” line. Think of it as space as in the room your joints, muscles, and spine have to move freely. The ultimate goal? Creating freedom of movement so your body can work without unnecessary tension.

A posture with space is:

• Tall but relaxed, not locked stiff

• Wide where it needs to be, allowing movement and breathing

• Dynamic, so you can bend, twist, or stretch without effort

Why Space Matters

When your posture is compressed or held in a fixed position, your muscles start to overwork to hold you up. Your spine loses mobility. Your shoulders round forward. Your hips tighten. Even your glutes can switch off because they’re not being used properly.

When you create space, your joints glide more easily, your muscles don’t have to grip unnecessarily, and your body is better hydrated - yes, your fascia, the connective tissue that wraps everything, loves this kind of movement.

How to Build Space Throughout Your Day

Instead of trying to “sit up straight,” focus on tiny movements that open space:

• Spinal elongation stretches

• Gentle twists and side bends

• Shoulder and chest opening

• Short mobility breaks every 30–60 minutes

Even just a few minutes of this can make a huge difference in how your body feels at work and at home.

Ease Over Effort

Good posture isn’t about effort. It’s about ease, freedom, and awareness. Not gripping, compressing or forcing. Noticing where your body needs space, and give it room to move.

So the next time someone tells you to “sit up straight,” choose space instead. Your body will thank you.