Choose a solid chair without wheels, place it on a level, nonslip surface and check that it suits the movement you want to do. For many gentle seated exercises, your feet should rest flat and your knees should bend comfortably around a right angle. The same chair is not automatically suitable for standing support.
You may already own something that works. Start by identifying the job rather than looking for a special exercise chair.
Decide whether you will sit or hold on
A chair for seated mobility needs a steady seat and enough space for your arms and legs to move. NHS guidance for its sitting exercises recommends a stable chair without wheels or arms, so the chair does not roll and the armrests do not block those movements.
If an exercise calls for standing support, a chair back serves a different purpose. It needs to stay steady when you touch it in the way the exercise describes. NHS Tayside also lists a solid worktop as a support option for its home exercises. A lightweight chair that is fine to sit on may not be the right thing to hold.
When you have a prescribed plan, follow the equipment and support advice you were given. Some people need a specific seat height, arm support or assistance. Do not remove a useful support just because a general guide shows an armless chair.
Check the chair before using it
Look at the legs, seat and back. Skip a chair with loose joints, a damaged leg or a back that moves unexpectedly. A wheeled office chair, a rocker or a folding seat that does not lock securely is not a substitute for a stable household chair.
Set the chair down and check whether all its feet sit firmly on the floor. A chair that wobbles at rest is not a good candidate for exercise. Avoid wedging it with a folded towel or stacking books under its feet to disguise the problem.
If you are considering a new chair, check its dimensions and stated weight limit rather than relying on a photograph. For a chair you already own, check the manufacturer's guidance if there is any doubt about the intended use.
Fit the seat to your body
Sit normally with both feet on the floor. If you have to perch on the front edge just to reach the ground, the seat may be too high for the activity. A very low or soft seat may also be an awkward choice if you are meant to rise from it.
Try the setup without starting the exercise. Can you settle into the position the instructions describe? Do the armrests prevent the arm movement? Is there room to lift a foot without knocking furniture? The goal is to find those limitations when you are seated and unhurried.
Do not raise the chair on an improvised platform or pile up loose cushions. Choose a different chair or ask a professional how to adapt the exercise if you cannot find a suitable position.
Make the floor part of the equipment check
Clear cords, loose mats and objects from the space you will use. Keep anything you need within easy reach without putting it underfoot. A good chair on a slippery rug can still make a poor setup.
Leave room for the entire movement. For seated exercises, that might mean enough space in front to straighten a leg and enough space at the sides to open your arms. For standing exercises, it includes a clear approach and an easy place to stop.
If someone shares the room, tell them where you will be moving. A clear lane is more useful than a carefully measured space that people need to cross continuously.
Keep one setup you can repeat
Once you have found a suitable chair and position, use that arrangement again when possible. A note as simple as “dining chair, bare floor, clear space in front” can save you from recreating the setup every session.
If the next exercise asks you to do something different, check the fit and stability again. A chair that works for ankle movement while seated is not proof that it should support your weight while standing or leaning.
Do not use the chair to test your balance or progress to a harder movement by making the setup less stable. Keep the equipment predictable so the exercise, not the furniture, is what changes. When in doubt about the support you need, ask the person who recommended the exercise.