Changes in oxygen uptake were shown in Fig.3. The skipping group’s oxygen uptake at rest at 11:00AM
was significantly lower than at 2:00PM. This result agrees with the lack of DIT in the skipping group
at 11:00AM. Increases of the oxygen uptake continue about three hours after meals. Subjects had lunch
before conducting the experiment at 2:00PM : from one hour and a half to two hours before. Also, when the
temperature falls one degree, the metabolism drops by thirteen percent. This decrease of heart rate and
oral temperature induces a lower level of oxygen uptake.