Posture correctors can help improve your posture by training your muscles and spine to align correctly. However, it's important to note that posture correctors are not a cure for poor posture. You'll need to wear the device as directed and perform regular exercises to strengthen your back and core muscles to see the best results. "A good posture corrector will help to train your muscles to sit up straight," says Rishabh Nanavati, a rheumatologist-orthopedist at ClinicSpots, a holistic healthcare company. "It will place the right amount of pressure to encourage your body to sit up straight. It’s important to wear it for the right amount of time, though, as too much pressure can cause more harm than good."