Unobvious harm from too much smartphone use Stress on the spine! An adult's head weighs about 4.5-5.5 kilograms, which is quite a lot for our neck. However, as the tilt increases, the force acting on the spine increases. For example, if the tilt reaches 15 degrees, it weighs the head down to 12 kilograms. And if the head is bent to 45 degrees, the neck will be influenced by 22 kilograms. This kind of head position gradually causes chronic tension and pain in the neck. What happens has already got its name - text-neck (neck - "neck"). Prolonged deep inclination of the head, unusual for our organism, gradually leads to the premature erasure of vertebrae, the damage of cervical muscles, increases the risk of migraine and arthrosis in the upper part of the spine. So, try to hold the phone at the lowest possible angle, that is - closer to eye level👌🏻