I use laptop and smartphone everyday for many hours (online work and entertainment). Since May this year, I have been feeling dizzy sometimes every other day. The problem has increased in the last 2 weeks. Now I feel dizzy more and my left hand has started feeling numb once in a couple of days. A relative of mine has said that my usage of electronics for years has caused cervical issue which is causing the dizziness and numbness. My posture too isn't good. I am worried a lot and want to fix this completely. Kindly give effective suggestions.