Numb leg

Last Thursday night I found that my left leg was numb. It was not severe but I could tell the difference between two legs when I touched them at the same time. I went to the hospital the next day and it was because of my lumbar. 2 of my lumbar intervertebral discs pressed the nerves and caused the numbness. So I have to take time off to do physical treatment such as massage and acupuncture to relieve the numbness. The doctors told me not to worry, since the symptom is not serious and is pretty common in people who work in offices. He also told me to be aware of my sitting posture and do some exercises during the work hours.
So it is important to take care of ourselves, my friends. Our bodies are fragile and it is too late to recover when they are damaged. The herniated disk is irreversible, that means I will always have it, such as my atrophic gum……
I think I am literally weak, right? Sigh.

Notes: Your English is very understandable and good. However, you mix up your tenses a bit and tend towards sentence fragments. A few details: 

-    irreversible, not inreversible

-    sitting posture, not sitting gesture