30 minute timer
for good eyesight every 20 minutes look out the window 
at something 20 feet away for 20 seconds30 minute timer
for good eyesight every 20 minutes look out the window 
at something 20 feet away for 20 secondstimer 30 min
if you are having trouble studying and need to 
there is something called the Pomodorian technique.
its pretty helpful
https://todoist.com/productivity-methods/pomodoro-techniqueCopyright © 2021 Codeinu
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