PMR is usually practiced in a quiet environment where the individual can sit or lie down comfortably. The process involves focusing on different muscle groups, starting from the feet and moving up to the head. Each muscle group is tensed for about 5-10 seconds and then relaxed for about 20-30 seconds. The key is to pay attention to the contrast between tension and relaxation. Guided audio recordings or instructions from a trained therapist can be very helpful, especially for beginners.