Read the short text. Read the question and choose the correct answer.

Stage four is your deepest sleep, and it is very difficult to awake sometimes. Your dreams take place, heartbeats increase, breathing and rhythms become irregular. It is usually longer than other stages of sleep. It occurs about 90 minutes after falling asleep.

What statement is false, according to the text?

• During stage four of your sleep, your heartbeats may lessen.
• During stage four of your sleep, your dreams occur.
• During stage four of your sleep, your breathing and rhythms are irregular.
• During stage four of your sleep, you sometimes awake.