INS and diabetes mellitus: 1982; Brun et al. 2001). This is thought to be due to depletion in liver glycogen stores and the rate of glucose production failing to match the rate of glucose utilization (Sprague and Arbelaez 2011). In people with endogenous insulin deficient diabetes, hypoglycemia can occur during, shortly after, or even several hours after exercise (MacDonald 1987; Ertl and Davis 2004; Sandoval et al. 2004; Tsalikian et al. 2005), independent of the length of the exercise.