All foods are fine in limits. There is really not a lot going on in fish fingers and by the time you ate any amount of them you'd prob. already be well over on cals and fat anyway and would likely get very little in the way of Omega 3's. Plus we have a rule to only eat fish 2x a week anyway due to mercury risks so I'd not have them any oftener than that.

The theory is that red meat boosts testosterone. It does have a different nutrient composition and since you don't NEED it most people choose to leave it out. Honestly, it makes it far easier to stick to the diet without ANY meat because meat is low cal but high protein. You end up quickly going over on protein (40-50 g is very easy to get via meat) and you've only eaten a few hundred cals. Then what do you eat the rest of the day?? Everything else has protein in it (dairy, grains, etc) and this quickly ends up devolving into a starvation diet where people eat chicken, cucumbers, and gummy worms and very little else. So yeah, if you have to have meat, it's probably best to stick with the white meats which are somewhat less nutrient dense, but you'd probably be better off skipping it *unless you have PCOS which has higher protein allotment and meat can be better tolerated on that version of LE Diet.