I can't imagine any good way for a wristwatch to measure core temperature (as compared to peripheral temperature), or blood pressure (without an obtrusive and annoying sphygmomanometer), or respiratory rate. Heart rate and O2 are cake by comparison.
The term âleft shiftâ means that a particular population of cells is âshiftedâ towards more immature precursors (meaning that there are more immature precursors present than you would normally see). Take the neutrophil series, for example. In normal blood, the neutrophils are virtually all mature (segmented).
1 What you are looking for is a temperature shift of at least .4 degrees over a 48-hour period to indicate ovulation. 2  This shift should be above the highest temperatures in the previous six days, allowing one temperature to be thrown out as inaccurate (fluke, illness).