An automatic blood sugar lowering exercise device can effectively lower blood sugar levels of users, particularly diabetics who need to manage blood sugar levels, by consuming energy through automatic exercise in which a user repeatedly lifts and lowers both legs extended forward at a predetermined speed while the buttock is supported on a seat located at a predetermined height from the ground.

Embodiments of the present disclosure relate generally to the use of spectral sensors during a cardiac arrest event. More specifically, the present disclosure relates to the use of spectral sensors for measuring changes in pH and muscle oxygen saturation to estimate subject down time and evaluating the effectiveness of the clinical treatment administered during a cardiac arrest event. Given the narrow window of time in which emergency treatment must be administered, as well as the lack of information concerning the subject's condition, there is a need for a fast and accurate method of estimating the onset of the cardiac arrest emergency and evaluating the effectiveness of the emergency treatment being administered.