"Australian adolescents are not getting enough sleep on school nights, averaging 6.5-7.5 hours instead of the recommended 8-9. Survey results indicate that up to 66% of adolescents are experiencing symptoms of sleep disturbance, and rates of insomnia are very high in this age group. Not enough sleep can dull our positive emotions and make it more difficult to regulate our negative emotions. Poor sleep in adolescence can convey a higher risk of developing depression later in life. As well as putting down the electronics, some other suggestions to improve sleep include getting exercise during the day, drinking caffeine before lunch only, getting some sunlight every day, making sure the sleeping environment is dark and cool, having a set bedtime and getting up the same time every day." - Push-Up Challenge.