House of Wax - great start!
The premise of the Warrior Diet IIRC is that the ancient warriors of Rome, Sparta, Troy, etc. only ate one large meal a day in the evening. This made tactical sense in that you`d meet your enemy on the field of battle, delay the actual battle until the other side was hungry/energy down and then engage with troops more adapted to not eating.
Accumulator is again correct: it is hard to eat that many calories in one sitting - if you continue to eat your regular healthy food. (I think that is part of the Warrior Diet`s cunning plan

) But, if you play with the composition of your meals, it is doable. Consider 1g protein = 1g carb = 4 calories. 1g fat = 9 calories. So you`d have to eat less than half as much fat to achieve the same number of calories. And if you (wisely) chose to substitute (healthy) fats for (unhealthy) carbs, you would arrive at a OMAD ketogenic diet. Basically, invert the "Food Pyramid". (Now, if you really want to know a totally @#$%`d up/bad science study, the one behind the "Food Pyramid" takes the cake. No pun intended. I could - and have - rant about that for hours.)
This is why my pattern is the 16:8, as it is referred to - 16 hours not eating, 8 eating. I eat typically 3 meals in that 8 hours.
Accumulator - I really think you & I could kick back with adult beverages for hours and try to convert/educate each other. Between sets of kettlebell snatches, of course.

Goes back to goals. For me, fasting is an anti-aging strategy. If my 6-pack/intercostals reveal themselves more, so much the better. The keto or intermittent fasting strategy is good for folks who have a lot of weight to lose or a little (getting over the plateau of the "last 10" lbs) and is superior for the endurance athlete. The only semi-body builder type that I`ve run across who advocates it is Thomas DeLauer. (Pavel T, the father of Kettlebells in the US, did like the Warrior Diet but was a "normal" sized guy.) A more carb-based diet would seem to be better suited for the explosive athlete (sprinter, weight lifter, etc.). A more carb-based diet generally has more frequent meals.
jrock645 - what kind of IR sauna? (Near, mid, far, full spectrum, single frequency). Near and single frequency don`t get "hot" and are more for skin or shallow tissue stimulation. Mid is for pain relief. Far is sweating/detox. Full spectrum is a less specific version for all 3. First blush is that 1) you are in really good cardiovascular shape (& probably a fair bit younger than Accumulator and myself) and 2) it wasn`t hot enough. I set my far at 135F and 30 min is quite enough, thank you.