Sleep hygiene: This is a psychoeducational intervention
containing basic information on sleep habits and
hygiene. It includes instructions for establishing regular
sleeping times; going to bed only when feeling sleepy
and not using the bed as a means of trying to sleep; not
spending the day worrying about sleeping time; having
control over time; avoiding the use of stimulants (coffee,
cigarettes, drugs, black tea, Coca-Cola and chocolate);
avoiding alcohol consumption before sleeping; and
avoiding high liquid consumption before sleeping