Fasting has nothing to do with diet.

Time and time again the prophets and Jesus reminded people in the past –
and reminds us today –
fasting has nothing to do with diet.

Of course, it is a lot easier for us to think that.
But, Micah tells us, Jeremiah tells us, Jesus tells us – what Isaiah tells us:
"The kind of fasting I want is this:
Remove the chains of oppression and the yoke of injustice, and let the oppressed go free.
Share your food with the hungry
and open your homes to the homeless poor.
Give clothes to those who have nothing to wear,
and do not refuse to help your own relatives.”Or, as one translator puts it:
"This is the kind of fast day I'm after:
to break the chains of injustice,
get rid of exploitation in the workplace,
free the oppressed,
cancel debts.
What I'm interested in seeing you do is:
sharing your food with the hungry,
inviting the homeless poor into your homes,
putting clothes on the shivering ill-clad,
being available to your own families.”

Time and time again, folks went astray and thought fasting had something to do with diet –
self-deprivation was a whole lot easier to deal with than what the prophets and Jesus said God has in mind.
Fasting has to do with living your faith –
putting flesh on what you say you believe –
enacting your belief.

Get Ready for Lent: Sharing Our Resources

From the beginning, part and parcel of the Lenten observance has been alms giving. 
The purpose of fasting is not so much a bodily discipline as it is a sharing discipline.  Becoming aware of the needs of others, and responding to them with generous gifts of our time and talents and money are particularly transforming.

During this season, many of our Presbyterian Churches will be emphasizing our One Great Hour of Sharing as a concrete way of self-sacrifice for the needs of others. 
The discipline of a daily gift to the One Great Hour of Sharing jar is a concrete way of focusing our thoughts on our individual purpose for living.
It becomes an expression of the faith we proclaim.