Effects+of+Deprivation

Sleep is very important to rejuvenate your body, mind and soul. Without sleep theres serious side effects that will mess up your whole body. These side effects inculded depression,heart disease ,hypertension, irritability, slower reaction times ,slurred speech tremors. Sleep deprivation can have serious effects on your health in the form of physical and mental impairments. Inadequate rest impairs our ability to think, to handle stress, to maintain a healthy immune system and to moderate our emotions. In fact, sleep is so important to our overall health that total sleep deprivation has been proven to be fatal

[] this source is for the above information
 * Other typical effects of sleep deprivation include:
 * depression
 * heart disease
 * hypertension
 * irritability
 * slower reaction times
 * slurred speech
 * tremors.

No pretty sleep effects

Sooo...then what's the connection to Holden?

I believe that Holden is sleep deprived because he is thinking about death, his funeral, and getting himself killed in front of a firing squad in the army.

I think, because Holden is sleep deprived, that he is making bad decisions and is saying a lot of things he doesn't mean. When talking to Sally, he got irritable really easily and he is often depressed.