After your adjustment you may feel amazing, as range of motion is improved, circulation begins to be restored to affected areas, and your muscles begin to relax. You might also experience some tenderness, as your body begins to move into the correct positions. Some people experience minor side effects for a few days after chiropractic adjustment. These may include headaches, fatigue or pain in the parts of the body that were treated. While most people feel better as soon as the same day, it may take some time for your body to get used to its new positioning. These symptoms typically don't last very long. 94% of patients who consulted a chiropractor experienced a 30% reduction in low back pain after 4 weeks. The study focused on lower back pain because it's a very common condition treated by primary care physicians.