Oh gosh, that’s too bad. Hope he is all right.
Don’t worry about him, knowing Jussie he probably paid some Nigerians to skip a few meals for him.
You don’t “starve” in six days. After the first 24 hours, your body goes into “economy mode”, shifting from burning glucose for energy to burning ketones. It is correct to say that the change in body chemistry does lead to much more focused thinking, but as long as sufficient water is consumed, there is little problem with toxic buildup of nitrogenous by-products. The body begins to burn, not the fat, but the muscle tissue of the body. Fat burn comes along much later in the fasting cycle, as emaciation begins to show.
When coming off a fast, consume a high-protein, low-carb diet, or all the fat will just come back on FIRST.