Before I answer this question, it is worthy to note that there are two kinds of diet – the proper one and the crash diet. Of course, proper diet is considered healthy for our body, but people should also know that for proper diet to really work, they should also do it together with exercise. Now, if we are going to talk about crash diet, then the answer is simple: IT IS NOT HEALTHY.
This is because crash diet places stress to your body and its effectiveness is only short term. A lot of people resort to crash diet and while they do lose a few pounds in a few days, they find themselves gaining back the weight in just a short period of time.