You stand up after hours at the desk and the body has set. The lower back is tight, the hips do not want to open, and the neck has migrated somewhere it should not be.
If that is familiar, you are in good company. A day spent mostly still asks the body to hold one shape for a long time, and bodies do not love holding one shape.
This is not a diagnosis, and it does not necessarily mean anything is wrong. Most everyday stiffness eases once the body is invited to move again. The question is less what is wrong and more what kind of moving would feel good to come back to.
There is more than one way in
There is no single fix for this, and that is part of what makes it workable. Easing stiffness is less one technique than a direction, and there are several honest ways to move in it. What follows is not a ranking. It is a few doors back toward ease, and different ones suit different bodies and different days.
If your body has set into the shape of the chair.
You might explore
Movement & Dance · Pilates · Yoga · Massage & Bodywork
Each offers a different way of coaxing the body back toward ease.
Movement & Dance
The simplest answer to holding one shape is to move through many. Free, expressive movement lets the body find its own way out of stiffness, with no steps to learn and no one watching.
Pilates
Pilates works with control and alignment, waking up the deep muscles that a long sit lets switch off. Many people find it gives the back and hips somewhere steadier to rest.
Yoga
Yoga meets stiffness with breath and gentle range. A slower practice opens the hips and spine, and you can scale it to whatever the body has to give today.
Massage & Bodywork
Sometimes the tension wants hands. Skilled bodywork can ease the places a day of sitting has knotted, especially a spot that will not let go on its own.
A slow unfold
Before you sit back down, stand up and reach gently overhead, then fold forward as far as feels easy, knees soft. Roll slowly back up. Do it once or twice, and notice where the body was asking for a little more room.
When it helps to work with someone
Much of this you can begin on your own. A practitioner can help when the stiffness is stubborn, when it keeps returning, or when you would like someone to shape a practice around your body and your days.
And if a spot is sharply painful, numb, or simply does not ease, it is worth having a clinician take a look. Some things deserve more than a stretch, and there is no harm in asking.