Have you learn about posture corrector brace?

How does the Posture Corrector Brace work?
Posture Corrector brace is a corset-like garment that holds your back in a fixed upright position, which can fix your back in an upright position, making you almost impossible to be lazy. It promotes good posture by pulling your back muscles to their natural position and adjusting them to maintain that position.

How long will it take me to see the results?
It is unrealistic to expect that any kind of posture corrector brace eliminate the laziness from one day to another for several years. After all, posture corrector brace is a gesture aid, not a miracle worker.
A good posture posture corrector brace can really remind you to straighten your body immediately, so in this sense, you will see an immediate effect. As long as you wear this device, you will look taller and slimmer. But for these results to have a lasting effect, you need to train for at least two weeks.

A good posture corrector brace will keep you upright when you use it. However, it can take months to show any meaningful signs of improvement. Given that you're going to wear it under your clothes for 20-25 minutes a day, you'll want to make sure it fits comfortably and that the fabric doesn't irritate your skin. This is different from smart posture corrector brace, which are designed for all day wear.