How strong and steady are you?
A 5 to 10 minute self-check in three parts. Your numbers are compared with published ranges for your age. Everything stays on your device.
Read this first
This is a screening tool, not a diagnosis or medical advice. Do the chair stand only if you can safely stand up without help, with a sturdy chair against a wall and, ideally, someone beside you. Skip it if you've fallen recently, feel dizzy when standing, or have been told not to.