Some things that help for me are (1) a cup or two of green tea on mornings I don't exercise (can get me "over the hump" of the end of a fast), or preferably (2)

Some things that help for me are (1) a cup or two of green tea on mornings I don't exercise (can get me "over the hump" of the end of a fast), or preferably (2) exercising as early as possible in the morning. It took me about 30 days to get into a good rhythm.