I always feel sleepy and will start yawning once I start studying.
Why is it so?
Is it because, I am using my brains more when I study, and since I use it more,
my brain burns more energy. Now I need more Oxygen so I yawn.
Whn I yawn it also means my brain is tired and I need to sleep (at least hard wired
due to experience).
So I want to sleep.
Does this explain a little bit about laziness?