I had a friend who use to play the gambling only when he consumed drugs,Sometimes he use yo win the money.But most of the time he loss the funds,
When a gambler gambles under the influence of alcohol or drugs, it has the ability to affect their decision making. Drugs, alcohol or substance use in gambling can make a gambler over gamble, go over their budget, chase a loss, and be totally numb to feeling the effect of losing.
In casinos where free alcohol are served to customers who are gambling, the gamblers will most likely gamble more even without knowing.
In the first place, taking drugs is already a red flag in a person let alone a gambler. Most drug addicts are also nasty addicts in some other weird aspects like gambling and sex this is because it is difficult to come across a drug addict who isn't also an addict of something else. drugs alter the state of mind of people making it difficult for them to make proper decisions a person under the influence of drug will either loss consecutively or even begin to stake abnormally.
As for the sleep aspect it is even logical to conclude that such a person is an addict because the big question is why would someone feel sleepy and still continue to gamble.