Eat More to Lose More?

Yes! After years of being hungry, & doing lots of research, I'm now a big fan of eat more to lose more! I'm happy eating a little above my BMR.

How is eating a little more than you need to survive in a coma "eating more"?

The physiological stuff is the stuff I talk about all the time here on the site, on the forum and elsewhere. When folks diet and lose weight/fat, the body adjusts metabolic rate downwards. While a majority of this is simply due to weighing less (smaller bodies burn fewer calories), there is also an adaptive component, a greater decrease in metabolic rate than would be predicted due to changes in things like leptin, insulin, thyroid hormones, etc.
By moving to roughly maintenance for a couple of weeks, many of those hormones are given time to recover. Thyroid hormones come back up, as does leptin. This is a big part of the reason for the recommendation to raise carbs to 100-150 grams per day as a minimum.
Thyroid hormones are distinctly sensitive to carbohydrate intake as are leptin levels (especially in the short-term). Just raising calories but keeping the diet very low carb doesn’t accomplish everything hormonally I want the full diet break to do.
This is also the rationale behind the duration, thyroid hormones and the effects that they exert aren’t immediate. It may take 7 days of eating at maintenance for thyroid levels to come back to normal, but you need at least another week to get many of their effects to max out. So in answer to the question “Can I make the break shorter?”, the answer is “No.” I know that everyone wants to GET LEAN NOW but unless you are a contest dieting bodybuilder or figure chick and there’s no real-time constraint, what’s the hurry?
There are other effects as well. Hormones like testosterone often go down during dieting and female hormones can be whacked out too. Cortisol generally goes up when you diet and raising calories and carbs helps shut that off for a bit.
I’d note in this regards that many find that, after a period of hard dieting, they often keep leaning out into the first week of a planned break. As I discussed in the article Of Whooshes and Squishy Fat, some of it may simply be dropping water.
But some of it does seem to be true fat loss. People keep bugging me for the mechanism and my current best-answer is “Magic!”. At some point, I might throw out some of my theories on it. Not today.
As well, for leaner individuals, even if they do everything ‘right’, there is often a loss of performance or muscle mass during a diet. The two weeks with raised calories gives them the capacity to train a bit more and recover what they’ve lost before moving into the next stage of dieting.
Finally, the idea has been thrown out there that stabilizing at a given (reduced) body weight or body fat might give the body a better chance of accepting that new weight as ‘normal’ and adjusting setpoint. Frankly, I’ve never seen anything to support that in the literature. It’d be lovely but I tend to doubt that’s how it works. I’m just mentioning it for completeness.