Daniel fast and others are mentioned ,,the real thing to concentrate on is you. Not a regimented go by the book ,,''religous'' experiment.It's about what are you willing to give up in place of concentrating more on God speaking to you.You'll find after 3 days a lot more communication between you and HIM. You'll need it for strength ,willpower and guidance.I have fasted and honestly it felt like an accomplshment that I had done ,,wrong wrong wrong!!!!!!Some people can fast food and it means nothing ,ask them to give up a favorite TV show though !!Whatever is important to you is important to God,,try giving it up in exchange for more time with the Creator. Check on line for books to help you.Remember it's more about what you lay down in exchange for what you ''pick ''up fellowship with your saviour.