To maintain proper form during exercise, individuals should focus on body alignment, posture, and movement control throughout each repetition. Start by learning the correct technique for each exercise through instructional videos, personal training sessions, or guidance from fitness professionals. Concentrate on engaging the targeted muscles and avoiding compensatory movements or momentum. It's also helpful to perform exercises in front of a mirror or record videos to self-assess form and make necessary adjustments. Listening to cues from experienced trainers and paying attention to how the body feels during exercise can further reinforce proper form and prevent injury.