Spiritual Fasting is the practice of abstaining from food or drink (biblically) for a specific period of time, under the direction of the Holy Spirit. Fasting is circumsicion of the heart, through denial of the flesh.

Fasting shifts our dependency from our natural means to God's spiritual sustainment. When we fast, we allow our bodies to become uncomfortable to give way to God being our comfort. Our physical withdrawing pulls us closer to God, who can fill, revive, and restore us both physically and spiritually. 

Yes, there are several fasting methods. Biblically, fasting is from food and water. However, the Lord is more concerned about your heart posture than what you fast from. But unless you are medically unable, it would be highly suggested that we follow what we see in scripture.

Depending on your level of experience and maturity in fasting, being around others who are eating could be problematic. Remove yourself from those spaces to honor God. But also, recognize if breaking the fast to honor the Lord through engaging in community is possible. If you are fasting well, you will sense the leaning of the Spirit on which direction to go.

Be open about your fast to your family. Just modeling a consecrated life to the Lord in this way is powerful. Also, having your children purposefully dedicating an hour, 4 hours, or maybe even 12 hours to the Lord is a great way to start them off in the practice of fasting. Ensure to fast alongside them as a way to support them in growing in this practice.