<p>Is there any (legal) snacks that help keep the mind attentive and improve concentration.
Or maybe there is a snack that prevents the mind from "crashing". </p>
<p>Are drinks allowed? </p>
<p>Any advice is appreciated!</p>
<p>Edit: I have never, in my life, eaten anything during the middle of a test so I have know knowledge whatsoever about this! : D</p>