The first question relates to the fact that sometimes at the end of a session when I press stop to find out what the lowest level of stress I reached was, the unit would blink say at level five, then go down and blink at level four, then three, two, and one. Why does it do that? Is it a defect? Should I consider five to be the lowest level reached in such a situation?

The second question I think I know the answer to. I sometimes cannot get the readings to move beyond the highest level of stress (all red on level 8). I notice that it tends to happen when my stomach is full. Any comments on this?