This NYTimes article convinced me to start a 5:2 Diet experiment for the next month. I already played around with skipping lunch last year, and it did help maintain my weight.
If you subscribe to the principle that weight is a function of calorie inputs minus calorie output, there’s really no magic to any of these. You just need to find the setup that works best.
Next month will be tough since I’ll be traveling for vacation and work. But better now than later.