4. The 3-Day Cleanse
There are different versions of this cleansing diet circulating online. The key thing to follow is maintaining the 800 to 1000 calorie cap per day. Because of the low calorie intake, losing weight on this diet is highly likely. This regimen is quite easy to follow, and may be bearable since it only lasts for a few days. There are no food restrictions and no exercise required for this one, but it may still be difficult to achieve due to the calorie cap, which is less than the normal recommended daily consumption for adults.