I don’t think so because I always pay attention to my health and be careful about it but nothing seems bad here. Well it has been 2 hours of hanging, I will stop now . I will keep telling the results of this simple device in this forum.
01/03/2009- NBPEL:5.1; EG:4.6.
01/05/2010- NBPEL:6.1; EG:4.7.
Long Term Goal- NBPEL: 7.0; EG:5.5