Five tips for better posture with Dr. Nick at Country Chiropractic Clinic! Feeling tired, sore or weak? Have you thought about your posture lately? Most of us don't think about our posture as being so powerful, but it is. "Structure determines function," Dr A. Nicholas Martin from the Country Clinic explained, "Fitness trainers understand this, when you have poor form while doing an exercise like weight lifting, you are going to hurt yourself. This doesn't change when you are doing everyday activities."