A disruption of circadian rhythms due to crossing time zones is known as ____

Adolescents high in ________ may exert more effort and show more persistence when faced with challenging tasks

Fill in the blank with the appropriate word.

Which of the following helps to avoid the fragmenting of sleep rhythms?

a. using sleep restriction b. using the paradoxical intention c. exercising strenuously an hour before going to bed d. drinking a glass of wine before bed