STOP AND NOTICE how you are using your laptop or mobile as you read this. We have habits which are out of our awareness.
If you are sitting are you sitting in a slump ? Are you sitting on your sitting bones? Are your shoulders hunched forward? Are your feet wrapped around the chair ?
If you are standing is your weight equal through both of your feet? Are your knees locked back? Notice if your shoulders are hunched and your neck is poked forward.