Fasting is primarily for the purpose of intensifying your relationship with the HolySpirit. When the HolySpirit is with you or in you there is no reason to fast,<p>This does not mean that SpiritFilled people never need to fast.  If you are weak in faith you need to pour yourself into the Word and pray in the HolySpirit.  This may mean changing your patterns of work, play and eating.