India, Oct. 22 -- Teens who use their phones late at night may take longer to fall asleep, get less sleep, and wake up more often during the night, according to a study published in JAMA Pediatrics.
To reach this conclusion, researchers studied 425 teenagers with an average age of almost 15. They collected data from nearly 7,600 nights to understand how phone use affects sleep.
The results showed that when teens used their phones more than usual after 10 p.m., they slept about 20 minutes less and fell asleep 64 minutes later.
Meanwhile, teens who spent more time on their phones were also more likely to wake up within 30 minutes of falling asleep.
"We know that sleep fragmentation in children or adolescents, specifically in teenagers, le...