Ive been doing weight-lifting for almost 2 years now, I am a 13 year old boy. I have nerve shaking in my fingers and sometimes in my toes. The shaking started about 3 - 4 months after I started weight-lifting. I am about 5 ft 8 and weigh 132.8 lbs which is about 9 st 6. And also for some stupid reason I can't keep balanced. Can anybody help me with these problems? Do you think I should stop doing weight lifting and see how I get on?