Fasting is an abstention from eating products of animal origin, such as meat, diary products, eggs etc. Fasting is related to religion and it is believed that the soul becomes cleaner when one keeps fasting. But, you can forget about religion and take fasting as a diet. Why not? Consuming more vegetables and fruits will clean up your body from unnecessary substances. You can do that, for example, two-three times a week. In the beginning it'll be a little bit tough, but with time, you'll notice that your health improved.
Try it and share the results with us!