Injuries are one of the most common reasons people abandon their training. They're also largely preventable when you understand the root causes and train intelligently. The most common gym injuries aren't bad luck - they're the predictable result of specific training errors.
The most common gym injuries and their primary causes: lower back strains (from deadlifts or squats with rounded spine under heavy load - fix by reducing weight and prioritising form); shoulder impingement (from pressing with elbows flared too wide, poor scapular position, or overloading too quickly - fix by checking technique and adding shoulder health work like face pulls); knee pain during squats (from caving knees, restricted ankle mobility, or progressing weight too fast - fix by addressing mobility and technique before adding load); bicep strains during pulling (from jerking heavy weight or using too much elbow flexion momentum).
Prevention strategies: warm up every session without exception. Add weight in small increments rather than large jumps. Film yourself occasionally to catch form breakdown before it becomes an injury. Include joint health work in every programme: face pulls, band pull-aparts, hip circles, and ankle mobility drills cost 10 minutes and prevent months of rehabilitation. Train with ego checked at the door - the goal is long-term progress, and injuries erase months of gains. When something feels "off" (not normal soreness but a sharp or persistent pain), stop the exercise immediately.