"Breakfast is the most important meal of the day" is advertisment, not science.
Bebefits of fasting:
lose weight.
Bolsters brain power.
Blood levels of insulin drop significantly.
Blood levels of the human growth hormone increases.
The body undergoes important cellular repair processes.
Beneficial changes in gene expression, related to longevity and protection against inflammation and disease.
Give it a try and you will be amazed !