do you ever feel "light" as if you don't have any energy in your body ? its not weakness, but something different. My legs and arms feel weak, sometimes heavy. I have been suffering from this since I had panic attack 4 months ago. I keep on saying to my doctor that maybe something neurologically is wrong with me but she keeps on saying its Anxiety. I had all heart tests and complete blood work including chemistry panel to check for deficiency and everything came out normal. Sometimes its like someone is pulling my body down and I will fall.