"Blinking" is when you shut and open your eyes, which is something you do 15,000 times a day or 5 times a second. Not exactly hard work, and it doesn't take long either.
So anything that you can do without even blinking (or before blinking) is extremely easy and can be done very quickly.
"We are not wholly bad or good, who live our lives under Milk Wood"
prayer of the Reverend Eli Jenkins in Under Milk Wood by Dylan Thomas