The purpose of this research study is to learn more about how sugar levels in the liver affect the ability of people both with and without type 1 diabetes. People with type 1 diabetes do not make their own insulin, and are therefore required to give themselves injections of insulin in order to keep their blood sugar under control. However, very often people with type 1 diabetes give themselves too much insulin and this causes their blood sugar to become very low, which can have a negative impact on their health. When the blood sugar becomes low, healthy people secrete hormones such as glucagon and epinephrine (i.e., adrenaline), which restore the blood sugar levels to normal by increasing liver glucose production into the blood. However, in people with type 1 diabetes, the ability to release glucagon and epinephrine is impaired and this reduces the amount of sugar the liver is able to release.