It really is the same thing under a different name. Your fasting period is slightly longer than more common methods of intermittent fasting.
The diet has actually evolved from its original format since it was first created and the name was coined. More recently, the Warrior Diet has been interpreted as a strict 20-hour food fast and a four-hour fueling window, with various exercise requirements, says Totoro. This is also sometimes referred to simply as a 20:4 diet or 20:4 fasting.
The current version doesn’t have any food restrictions for the fueling period, but you’re not supposed to eat at all during the fasting period. While this might sound similar to the popular IF diet known as the 16:8 diet, in which you fast for 16 hours and eat during an eight-hour window, it’s actually very different. First, it’s much easier to fit your daily calorie needs into eight hours instead of four, and in the Warrior Diet, you fast during the majority of the day, which is much more challenging than fasting overnight and into a short portion of the day, like you would with the 16:8 diet.Woman’s Health