Visual Sharpness

There is a man's face amongst the coffee beans in the picture as below. Time yourself on how fast you can locate the face.

Within 3 secs - normal developed brain. Within 1 to 3 minutes - brain responding slowly. Additional protein intake will help to improve it. More than 3 minutes - brain reaction is too slow. You need such brain exercise more often to improve further.
Tags: Visual, Sharp, Brain