When I am doing the program, while I am meditating (relaxation, energy work, etc), after about 30 mins or so, my left arm always gets too heavy, also, I can feel the same on the legs but no so hard like the left arm, when I finish I can move the arm without not much effort, sense of tact feels different for about 15 secs but get back to normal, is this are effects of light trance or something?