When will I start to feel the effects of the diet with Maunzaro?

I saw a review where someone said they couldn't look at food right after getting the injection,

I've heard that some people say their appetite hasn't changed even after getting the injection.

Does this also vary depending on the individual?

My acquaintance told me that even though it has been 5 days since they received the injection, they are always hungry at lunchtime and craving late-night snacks.

Does this also vary depending on the amount of injection in the early stages?

Also, I'm wondering if combining it with exercise definitely helps significantly with the effects of Maunzaro.

Just getting an injection won't be effective, right?