>>3Unless you're an expert on biochemistry and have taken precise measurements of your bodily chemicals, it's probably not gonna work.
And by boosting performance, the most it will do is slightly enhance concentration. Which is worth shit if you don't even know your materials to begin with.
One week not enough for significant progress? short period of time? Wait til you're in college.
Start by learning key terms (integers, prime numbers, etc.) and go from there. There's also plenty of guide for SAT online.