There really is no right or wrong way to fast ... Fasting is not about what you go without ..but why you are doing it ... You eyes are to be on God ... To deny the flesh a thing it desires or needs to put God above that flesh desire/need Everyone should consider their health before fasting ... A healthy person might be fine on a Juice and Water fast Where as a person with diabetes would risk there health should they try this ... Heres a great little article on this Scripture does not command Christians to fast. It is not something that God requires or demands of Christians. At the same time, the Bible presents fasting as something that is good, profitable, and expected. The Book of Acts records believers fasting before they made important decisions (Acts 13:4; 14:23). Fasting and prayer are often linked together (Luke 2:37; 5:33). Too often, the focus of fasting is on the lack of food. Instead, the purpose of fasting should be to take your eyes off the things of this world, and instead focus on God. Fasting is a way to demonstrate to God, and to yourself, that you are serious about your relationship with Him. Fasting helps you to gain a new perspective and a renewed reliance upon God.Although fasting in Scripture is almost always a fasting from food, there are other ways to fast. Anything you can temporarily give up in order to better focus on God can be considered a fast (1 Corinthians 7:1-5). Fasting should be limited to a set time, especially when the fasting is from food. Extended periods of time without eating can be harmful to the body. Fasting is not intended to punish your flesh, but to focus on God