How is Fasting looked at biblically?

Jesus statement from Matthew chapter 6 states, "when" not "if you fast". This is inference makes it clear up front a expectation for christians.

Since the actual act of fasting is not debate-able, we need to look at the types of fasting.

Richard Exley's book 'Man of Valor' is an excellent book and I highley recommend it to all men.

In his book, he clearly states out four different types of fasting.

1) Normal fast - abstain from all foods (liquid and solid) but drink water only.
2) Absolute fast - abstain from all foods and water (3 days max)
3) Partial fast (also known as Daniel fast) - limit the kinds of food you eat rather than all foods.
4) Supernatural fast - same as a absolute fast, but for a longer period of time (more than 3 days)

It is also noteworthy the Supernatural fast was only used twice. Once by Moses on the mountain top with God and Elijah. The Absolute fast is viewed as a desperate cry to God.

Richard Exley also comments the results of fasting is normally received after the fast is complete. In all the types of fasting, the purpose is to clean the spirtual landscape within.
1)