Fasting is prescibed in the Bible as a way of earnestly seeking the Lord. It meas simply giving up something (usually food) to make room to focus more of your time and attention on God. It is not advisable to fast fully unless you have worked up to it and know that you are physically able to do so. Start by giving up meat, sweets or social media. Lets set aside the things that we crave to focus our desire on Jesus!