Question: what are the negative effects of electronic devices?
Answer: Bad Posture, Back Aches, Neck and Shoulder Strain. It's an instantly recognisable silhouette: the figure hunched over a device. ... 
Pain in Wrists — Carpal Tunnel Syndrome. ... 
Eye Strain. ... 
Headaches. ... 
Stress. ... 
Physical Fatigue. ... 
Poor Sleep Patterns. ... 
Obesity.