It's important for you to know that spinal dysfunction always happens before back pain or neck pain, making most subluxations "silent".
Your body also has a natural way of altering your mechanics to avoid pain when dysfunction is present, which is a smart move in the short term, but not good if you don't eventually correct the dysfunction.
Regular assessments of your spinal biomechanics and nervous system function by a chiropractor can help detect, maintain and prevent dysfunction throughout your body.
Broad manipulations during movement may feel good, but it isn't the same as spinal correction. Your chiropractor is specifically trained to check and adjust only the necessary spinal segments during your visit. The safest way to gain the benefits of chiropractic is the leave it to the trained professionals.