The Science Behind My 3-Step Method

If you wake up stiff, feel tight after a day at your desk, or carry tension in your shoulders you can't seem to shake, you've probably been told it's just age. It isn't only age. Research points to two everyday culprits: sitting and stress.

After more than a decade teaching women 40+, I built my method around this. Here's what the science says, and how it shapes the way we move.

Sitting stiffens your hips and back

When you sit, your hips stay bent at about 90 degrees for hours. Over time, the body adapts.

In a 2020 study of 144 adults, people who sat more than 7 hours a day and got little exercise had 6.1 degrees less hip extension than active people who sat less. That's the movement you need to stand tall, walk with a full stride, and get up off the floor.

It's not just the hips. In a lab study, 4.5 hours of sitting without regular muscle activity made back muscles measurably stiffer.

Stress tightens your muscles, even when you're still

That knot between your shoulders is real. In a well-known 1994 study, mental stress tests alone raised muscle activity in the upper shoulders, with no physical effort involved.

Later research found the same muscles tensed up during stressful tasks and eased during relaxation. The good news: tension that builds can also be let go.

My 3-step method

Most workouts go straight to strength. But by 40, most of us are carrying years of desk sitting, stress and old injuries. In my experience, strength comes easier and lasts longer when your body moves freely first. So I start by easing that stiffness and tension, then add strength on top. Here's what that looks like:

1. Realign with dynamic movement to wake up stiff joints and get you moving freely again.

2. Stabilize to release tightness. When the deep supporting muscles do their job, the overworked ones can let go.

3. Build strength with strengthening work and isometric holds, on a body that's ready for it.

This order comes from years of watching what works for women who are stiff, carry old injuries, or worry about getting hurt. You feel better sooner, and you're far more likely to stick with it.

Pilates works for women over 40

The research on Pilates for women in midlife and beyond is encouraging.

• A review of randomized trials found Pilates improved mobility, balance, walking and fear of falling in older adults.

• In a 12-week trial of 110 women aged 60+, Pilates improved balance confidence, fear of falling and postural stability.

Try it for yourself

The free 5-Day Mobility Reset walks you through the first two steps: realign and stabilize. Most women feel the difference by day three.

Start the free 5-Day Mobility Reset →

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About the author

Christine Kirkland is a certified Pilates instructor who has taught women 40+ for more than a decade. She runs an online Pilates studio for women 40+ with 200+ on-demand classes, and teaches a weekly in-person class at the Dundas 55+ Club. She is a regular contributor to Sixty and Me, where she writes about Pilates and healthy aging

Sources

• Prolonged sitting and physical inactivity are associated with limited hip extension (2020)

• Regular muscle contractions can reduce muscle stiffness during prolonged sitting (2021)

• Psychophysiological stress and EMG activity of the trapezius muscle (1994)

• Trapezius muscle EMG as predictor of mental stress (2010)

• Pilates reducing falls risk factors in healthy older adults (2021)

• Effects of Pilates on fall risk factors in community-dwelling elderly women (2019)