By keeping your mind firing on all cylinders you will improve thinking and keep your mind sharp. Analytical thinking excercises like Suduko and crossword puzzles, video-games that require hand-eye coordination and the herb ginko biloba have shown in clinical trials to help, too.
nothing
Bats eyes aren't sharp at all!Bats are blind and sense their food with motion.
sharp-eyed, sharp-eyes, sharp-faced, sharp-shod, sharpshooter, sharp-tongued, sharp-witted
Yes
A sharp smell aroma. Is one that is strong or makes your eyes water!
You can keep hand tools sharp by filing them. anonymous@oola.com
Sharp eyes, swift flight and sharp talons.
Very sharp ones.
When your eyes are shut, your other senses will likely be heightened in response to the sudden pain from being pricked with a sharp object. You may feel a sharp, intense sensation, and your instinct will be to quickly react by opening your eyes and tending to the area that was pricked.
you can keep your memory sharp by exercise ,having fruits ,taking rest,and don't think that you can not remember.
allegedly it is a reflex to keep your eyes from popping out
Animals keep snow out of there eyes by blinking :)