When under conditions of low blood sugar, muscles are the easiest source of sugar. Low blood sugar -> Cortisol release -> muscle destruction. If you search for

When under conditions of low blood sugar, muscles are the easiest source of sugar. Low blood sugar -> Cortisol release -> muscle destruction. If you search for 'cortisol muscles', I'm sure you'll find something helpful. Fruit juice is one of the best sources of sugar - many fruits are good sources of potassium, which helps the body burn sugar instead of store it. Milk is also a good source of potassium.