To make sure you are not simply giving up eating, set aside intentional time to focus on God. Read scripture and pray during the time you would normally be eating or preparing food.
Some people have medical issues that prohibit them from fasting from food. Ask the Lord if there is another way in which you can fast. Maybe fast from social media or television and use that time to pray and read the Bible.
Types of Fasts
Full Fast: Drink only liquids (you establish the number of days).
Daniel Fast: Eat no meat, no sweets, and no bread. Drink water and juice. Eat fruits and vegetables (21 Days).
Partial Fast: A partial fast is 6:00am-3:00pm, or from sunup to sundown. You can select from three types of fasting—a Full Fast, Daniel Fast or giving up at least one item of food (21 Days).
Media Fast: Eliminate any choice of media influence–television, movies, Internet, gaming systems, cell phones, etc. or some other regular enjoyment that would bend your heart toward greater enjoyment of Jesus (21 Days).
Here are some other practical tips for fasting:
1. Start slow. If you’ve never fasted before, begin with just one meal.
2. Continue to drink water to stay hydrated. While some individuals in the Bible fasted from both food and water, this choice can be dangerous if you’re not experienced with fasting or haven’t consulted a medical professional.
3. If you’re accustomed to drinking caffeine, don’t stop suddenly. Decrease your intake for a few days before you begin your fast or you may have headaches.
4. Don’t overeat before or after your fast. Eat smaller, healthier meals before and after.
5. Tell only people that you must, but try to be considerate of others in your schedule if you fast (Remember Matthew 6:16-18).
6. Make a firm, prayerful commitment before you begin that you can remember while you’re fasting. Your commitment to fast is between you and God, so be sure to make a sincere, wholehearted commitment.
7. Consciously reflect on Scripture and your experience. Your physical response will often reveal spiritual truths. Write these down so you can reflect on how you heard from God and what He said.