[Learning strengthens some connections between neurons, known as synapses, and even forms new synapses. These synapses demand a lot of extra energy, though.] That means that at the end of the day, you have a brain that costs you more energy, ... That's where sleep would kick in.  -   Giulio Tononi     Quotes
[Learning strengthens some connections between neurons, known as synapses, and even forms new synapses. These synapses demand a lot of extra energy, though.] That means that at the end of the day, you have a brain that costs you more energy, ... That's where sleep would kick in. Giulio Tononi
 Learning