<span>Both strong and weak electromagnetic radiation emitted from any electrical or electronic equipment will interact with and affect human body's own weakelectromagnetic fields. Therefore, it interferes with your body's natural healing processes and produces all sorts of health hazards.</span>
Our lung capacity naturally starts to decrease at the age of 30. By the time we reach 50, it could be decreased by half. I'm not sure about when we reach 90 though. Hope this helps! :)