You can crack your upper back like a chiropractor by doing stretching exercises, foam rolling, using a massage ball or having someone assist you.
To crack your upper back like a chiropractor by stretching start by sitting in a chair with your feet flat on the ground.
Then place your hands behind your head and gently arch your back over the backrest of the chair.
Next hold in this position for a couple of seconds and then release.
To use a foam roller to crack your upper back start by laying on the floor with the foam roller under your upper back.
Then place and cross your arms over your chest and then gently roll back and forth and as you roll back and forth you should feel your back crack.
Foam rolling also massages your muscles and provides additional relief.
To use a massage ball to crack your upper back, place the massage ball between your back and a wall and then lean into it.
Next move your body up and down or from side to side to apply pressure to the tight areas and this can help to release any muscle knots and might lead to a crack.
To have a partner or other person help you crack your upper back start by standing with your back to the person and have them place their hands on your upper back to apply gentle pressure while you take in a deep breath.
Then as you exhale the person can press a bit harder.
Although this must be done carefully to avoid any injury.