Juice Fasting - Bad Fad or Great Idea?

Juice fasting is a fasting and detox method where a person consumes only fruit and vagetable juices for nutrition needs. While health benefit theories are at large, there have been very few studies done to prove the actual health benefits. Most juice fasts last anywhere from 3 to 14 days.

Question "What do you think about juice fasts?"

Here are some pros and cons my research as shown. 

• Pure juice contains little to no fiber, juice fasters often have to use an enema or an herbal or saltwater laxative during the time of fasting to efficiently expel waste from the intestines and colon.  
• Fasters should take care to maintain their intake of vitamins and nutrients during fasting, though no specific side effects are associated exclusively with juice fasting.
• Medical conditions such as diabetes may be aggravated by excessive intake of certain juices
• Juice mixes containing grapefruit juice may also adversely interact with certain prescription drugs
• Stored toxins that are mobilized during a cleanse must be released out of the system or they can be reabsorbed into the system
• Think of juicing as a “jumpstart” to better health and eating clean.

I have personally not done a juice fast, but I am not opposed to doing a short one. Most articles I read say you should not workout while juice fasting and when that is said it is a big red flag for me. Food is FUEL for daily activity, including your workouts. If this juicing is not good enough for a workout, it's prob not good enough for me to try. I would much rather stick to Shakeology for all the fruits and veggies in a drink I can get. Plus, it tastes good :-)