How did it go with following lesson 3 about taking frequent 'eye-breaks'? Very tough, right? It does take time to break old routines and habits, so please do keep it up!
Lesson 4 is also about taking regular breaks, but this 'rule' deals with studying:
While studying, place a bookmark 3 or 4 pages ahead. Once you reach this point, get up and move around for at least one minute - then move the bookmark to the next stop.
So, when you are studying it is not just every 20 minutes that you should take a break, but but every 3-4 pages. I know, I am repeating myself. But it is quite important.
'Why is that?', you might ask.
Well, your brain can only take in so much at a time. After a few pages of studying, all your brain wants to do is take a break. It cannot take up more information and starts to shut down. You just stare at the page and new information does not come in - and your eyes are strained as well.
So therefore, you are better off doing some exercise, refresh your brain by letting all the stuff that you have just learned sink in, stretch your body and drink a glass of water.
And then you are good to go for the next round: place your book-mark three to four pages forward and repeat the process.
Oh - nearly forgot to mention: don't forget rules 1-3 while studying, either. Keep your distance to the book, and be aware of the periphery and space next to your book and follow the 20-20-20 rule.