There is power in corporate fasting and power in corporate praise.
God knows there is never a convenient time to fast.
Fasting stirs a hunger in your spirit that goes deeper than the temporary you experience in your flesh.
Fasting keeps you sensitive to His (God) Spirit, enabling you to live holy.
Fasting is what prepares you for a new anointing.
When the Holy Spirit calls your to fast, He is preparing you for what is ahead.