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When you think about it, teenagers are a lot like pandas. Like the black and white bears, teens often have a tendency to lounge around for hours, munch their way through massive amounts of grub, and snooze for extremely long stretches. It’s not unusual for youngsters to emerge zombie-like from their bedrooms hours after parents and little ones have arisen on weekend mornings, or have a ‘disco nap’ in the afternoon. But how can you tell if your child’s sleeping habits or typical for a teen – or a cause for concern? How much do teens need? “Sleep research suggests that a teenager needs between eight and 10 hours of sleep every night, so slightly more than an adult or younger child requires,” says Dr Hana Patel, sleep expert at Time4Sleep. “This is because teenagers need additional sleep to support their rapid physical, intellectual, and emotional development.” Chris Tattersall, sleep expert and MD of Woolroom explains: “They are going through a second developmental stage of cognitive maturation. Additional sleep supports their developing brain, as well as physical growth spurts.” However, it’s estimated that most adolescents in the digital age only get about 6.5 to 7.5 hours sleep. Tattersall says: “With the increased use of social media scrolling before bedtime, this is affecting thousands of teenagers’ sleep because the blue light from screens suppresses melatonin levels and delays sleepiness.” What happens if they don’t get enough sleep? “Teenagers not getting enough sleep can lead to all sorts of potential issues,” says Tattersall. Psychological symptoms may include, he warns: “Depression, difficulty concentrating, memory loss, anxiety and low self-esteem.” Plus, there’s the risk of weight gain due to eating more sugary foods to combat tiredness. “Not only does it have negative effects on their general wellbeing but it can also affect their academic performance,” Patel adds. Is it possible to sleep too much? It may seem counterintuitive, but sleeping too much can actually make young people more tired. “Anything over eight to 10 hours of sleep for teens could be considered excessive and may cause daytime sleepiness,” says Patel. “This can negatively affect interpersonal relationships, extracurricular activities, general health and, for older teens, driving too.” It’s important for parents to watch for signs that teens are struggling with sleep. “Look out for concentration difficulties, shortened attention span, memory impairment and lack of enthusiasm or energy,” Tattersall says. “You also might notice moodiness and aggression, poor decision-making, and signs of depression.” Patel says: “Sometimes teens may also complain of symptoms like headaches and migraines.” Try to encourage good ‘sleep hygiene’ in terms of a youngster’s evening routine, meaning avoiding large meals and caffeine before bed and creating a relaxing bedroom environment. “If possible, reduce the use of devices like smartphones and tablets, TVs or computers in the bedroom at night, as the light from the screens interfere with sleep,” Patel says. “If you are concerned about your teenager’s sleeping habits and the effects of this on their health, consult with your GP.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Kate gives a lesson in autumnal power dressing in a green trouser suit How can I boost my soil when I go peat-free? See Cate Blanchett champion sustainable fashion at glamorous Giorgio Armani show

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Lewis Hamilton finished only 15th in practice on a troubling day for the home favourite at the British Grand Prix. As a dominant Max Verstappen carried over his crushing form to a sizzling Silverstone by completing an ominous practice double, Hamilton’s Mercedes team laboured in the heat. Hamilton finished 12th in the opening running, and then ended the day three places further back, 1.2 seconds adrift of Verstappen. Fellow Briton George Russell was a few places better off in 12th in the other Mercedes. Carlos Sainz took second for Ferrari, 0.022 sec behind Verstappen, with Alex Albon an impressive third in his Williams. Red Bull’s Sergio Perez finished fourth, with Albon’s Williams team-mate Logan Sargeant fifth. Verstappen, a winner at seven of the opening nine rounds of a one-sided campaign, has already established a commanding 81-point lead in his pursuit of a hat-trick of world championships. The Dutch driver cruised to the chequered flag a week ago at Red Bull’s home race in Austria, and he will head into the remainder of the weekend as the driver to beat following an emphatic start at Silverstone. Hamilton has won seven of the last 10 races staged here, but the Mercedes man will have to upset the odds to add to his tally on Sunday. Hamilton has a new front wing as Mercedes hope to claw back the deficit to their rivals. But their star driver was on the radio complaining about the bouncing his machine was suffering from, while Russell was also on the intercom to bemoan his unruly Mercedes. “I have no grip,” reported Russell. “The car is sliding all over the place.” Hamilton is in the midst of another up-and-down campaign. He arrived at the last round in Spielberg following consecutive podium finishes, but Mercedes struggled at the Red Bull Ring. Hamilton crossed the line in seventh and was demoted to eighth following a second timed penalty, and on the evidence of practice, he may be braced for another underwhelming weekend. Despite the threat of action from Just Stop Oil protesters, both practice sessions passed off without incident. However, F1 bosses, Silverstone and Northamptonshire Police remain on high alert that a protest could yet disrupt qualifying on Saturday and Sunday’s 52-lap race where 150,000 spectators are expected to attend. Elsewhere, Lando Norris was only 14th for McLaren, while Charles Leclerc finished rooted to the bottom of the order. The Monegasque was ruled out of the second running with an electrical failure on his Ferrari. Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Lewis Hamilton promises to keep his cool on team radio after Austrian flashpoint Lewis Hamilton defends casting ‘iconic’ Brad Pitt as F1 driver in new film Max Verstappen hints he may retire from Formula One unless calendar reduced

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TL;DR: A lifetime subscription to StackSkills Unlimited is on sale for just $19.97 through October