WHAT IS THE BEST WAY TO PREVENT BACK PAIN?

Try these things. they can help to avoid back pain wich is very common.

exercising, losing excess weight and maintaining good posture are important. practice standing tall, with your head up and your shoulders back not slouching and sitting straight. slouchirs is bad for the spine and for blood circulation. so keep your back against the back of the chair, keep your feet flat on the floor and keep your knees slightly higher than your hips.