By Avni Trivedi, CNN

(CNN) — Teens’ glued-to-their-phone habits are turning many of them into night owls on school nights — at a time when they need all the sleep they can get.

The American Academy of Pediatrics and the American Academy of Sleep Medicine recommend teenagers get eight to 10 hours of sleep every night.

But more than half of teens in the United States are spending up to an hour or more on their phone between the hours of 10 p.m. and 6 a.m. on school nights, new research has found.

Additionally, more than half of teens were using their phones in the middle of the night, between 12 a.m. and 4 a.m., according to lead study author Jason M. Nagata, associate professor of pediatrics at the University of California, San Francisco.

Nagata and his colleagues analyzed data collected from the Adolescent Brain Cognitive Development Study, which shows how teenage phone-use patterns and specific types of uses cut into sleep during nighttime hours.

Although the research doesn’t directly link nighttime phone use to harmful outcomes for teenagers, previous research has shown sleep disruption does have negative impacts.

“By displacing the opportunity to sleep, it can be challenging for teens to get adequate sleep, and that has downstream impact on their waking behavior, as we’ve known for many, many years,” said Dr. Mary A. Carskadon, professor of psychiatry and human behavior at Brown University. She was not involved with the study.

Lack of sleep impacts a lot

Getting inadequate sleep can affect people in numerous ways. For teens, who are at an age when the brain and body are developing, sleep loss has even greater consequences.

Cognitive function is impaired when the body isn’t well rested. It becomes more difficult to consolidate and retain information acquired throughout the day.

“One of the life tasks for teenagers is to learn,” Carskadon said. “Whether it’s school learning, learning their sports, how to behave with other people, social interactions, there’s a lot of learning building up across the adolescent age span.”

Emotional regulation worsens with poor sleep. In a 2013 study, a group of healthy adolescents between the ages of 14 and 17 participated in a three-week experiment that started with a typical week of sleep. Next came a week of sleep restriction with 6 ½ hours of shut-eye per night, followed by a final week of healthy sleep with 10 hours each night.

The participants rated themselves as slightly more anxious, angry, confused and fatigued during the sleep-restriction period compared with the healthy sleep period. The adolescents and their parents also reported more irritability and poorer emotional regulation.

“The less sleep a teenager has, the more irritable they become,” Carskadon said. “Parents will tell you that it’s one of those no-brainer kind of conclusions.”

For certain more vulnerable youth, less sleep can pose risks to their mental health. Nagata noted that past research suggests sleep-deprived kids are at higher risk of depression and anxiety symptoms. Lack of sleep could also make teens vulnerable to suicidal ideation, self-harm and risk taking, Carskadon said.

Adolescents focused their screen time on apps featuring social media, entertainment, games, communication and music, according to Nagata.
Teens spent the most time — an average of 33 minutes every night — on apps such as YouTube, Instagram and TikTok.

By Emile Nuh, CNN

(CNN) — Two-time French Open finalist Casper Ruud overcame extreme heat – and a defiant Russian qualifier Roman Safiullin – to advance to the second round at Roland Garros.

The 15th-seeded Ruud was up two sets and leading 5-2 against Safiullin in the third set, but the 27-year-old Norweigan failed to convert on five match points and eventually lost the third set 7-5, where he was seen moving gingerly back to his chair.

In the midst of losing the fourth set 6-0, Ruud received medical attention after the first and third games, during which he was seen pouring water on his head, wrapping his neck with an ice-filled towel, and rubbing ice on his face.

Temperatures during the three-hour, 56-minute five-set match reached 91.4 degrees Fahrenheit (33 degrees Celsius), according to France’s national weather agency, Météo-France.

“It was kind of heatstroke feeling,” Ruud said afterwards. “I had experienced something similar some years ago when I played in Washington DC, and I had to retire in the third set.

“That’s the only time I had that feeling I had today in the fourth set, where I felt at times really dizzy and walking around like a zombie almost.”

Luckily for the world No. 16, a five-minute heat break after the fourth set, allowing him to get his “pulse and body temperature down as much possible.”

Ruud recovered to comfortably take the deciding fifth set to win the match 6-2, 7-6(5), 5-7, 0-6, 6-2 and advance to the second round, where he will face Serbia’s Hamad Medjedovic on Wednesday.

“I’m proud because I never gave in (and) I didn’t give up. I’d rather be out there and lose (6-0 and 6-0) than retire, but it didn’t look pretty there in the fourth,” he said after his gutsy display.

“(But) of course, very happy that I was able to kind of jump start an almost dead body.”

Sweltering European heatwave

The heatwave hitting Europe is set to affect more players across the tournament as the French capital faces continued scorching temperatures.

Météo-France said 352 French towns recorded their highest-ever May temperatures on Monday, while 31 of France’s 96 administrative departments have been placed on “high-temperature alert” until Tuesday.

According to the agency, temperatures could climb to a staggering 98.6 degrees Fahrenheit (37 degrees Celsius) on Tuesday in what it described as a “premature, remarkable and long” heat episode expected to last several more days.

The extreme temperatures are having deadly consequences. There have been “seven deaths directly or indirectly linked to the heat, including at least five from drowning, as well as deaths related to extreme heat during sports events,” Maud Bregeon, a French government spokesperson, told French TV network TF1.

On Sunday, a 53 year-old man died during a running event in Paris and a woman died at a Hyrox sports event in the city of Lyon, according to the Associated Press citing local media reports.

Por Kevin Liptak, CNN

Cuando los médicos del presidente Donald Trump publiquen el resumen del examen físico al que está programado someterse este martes, es casi seguro que el documento concluya que goza de una salud excelente, si es que sus evaluaciones anteriores sirven de indicativo.

Sin embargo, es probable que esto sirva de poco para acallar las interrogantes sobre la salud de Trump. E incluso el propio presidente ha comenzado a reconocer tácitamente su propia mortalidad —aunque a menudo en el contexto de su seguridad— al reflexionar periódicamente sobre el tiempo limitado que le queda en la Tierra y preguntarse en voz alta si logrará llegar al cielo.

“No sé cuánto tiempo más estaré por aquí”, reflexionó durante un evento en el Salón Este a principios de este año. “Tengo a mucha gente detrás mío”.

La visita de Trump al Centro Médico Militar Nacional Walter Reed representará la tercera ocasión en la que acude a dichas instalaciones para un examen médico desde que, el año pasado, se convirtiera en el presidente de mayor edad en asumir el cargo. La Casa Blanca declaró que el chequeo incluiría “evaluaciones médicas y dentales anuales de rutina”, a pesar de que el presidente ya ha visitado a un dentista en Florida en dos ocasiones este mismo año.

Trump y su equipo se apresuran a describirlo como un líder de energía inagotable y una agudeza mental inigualable, restando importancia a los signos visibles de su edad y a los momentos en los que parece quedarse dormido durante las reuniones. Pero ni siquiera las evaluaciones optimistas ofrecidas por su médico tras sus frecuentes exámenes han logrado disipar las dudas en torno a la salud de Trump. Los presidentes no tienen la obligación legal de divulgar información alguna sobre su salud; por consiguiente, todo aquello que deciden revelar lo hacen por elección propia. De varios presidentes anteriores a Trump se descubrió, a posteriori, que habían ocultado problemas de salud durante su mandato.

Trump, cuya marca política se sustenta en una imagen de fortaleza y vigor, es notoriamente reacio a admitir cualquier debilidad física. Casi a diario establece comparaciones con un predecesor, al que denomina “Sleepy Joe” (Joe, el dormilón). Sus asesores se apresuran a señalar cuándo el presidente se queda trabajando hasta tarde —tal como hicieron este fin de semana, cuando un asesor de comunicaciones anunció que el presidente se encontraba en el Despacho Oval a las 9:30 p.m.—.

“Resulta que no soy una persona mayor. Soy mucho más joven que ustedes”, insistió Trump este mismo mes ante una comunidad de jubilados en Florida. “Soy un hombre mucho más joven que ustedes”. Sin embargo, aunque Trump es una presencia más ruidosa y visible de lo que fue Joe Biden durante su presidencia, aun así viaja con menos frecuencia que durante su primer mandato y, en múltiples ocasiones, ha cerrado los ojos durante largos lapsos en eventos transmitidos por televisión.

Los repetidos intentos de asesinato contra Trump por parte de aspirantes a magnicidas, sumados a su avanzada edad, parecen servir como recordatorios de que todo podría cambiar en un instante. Aun cuando él y sus asesores restan importancia a cualquier deterioro físico —como los hematomas en sus manos o la hinchazón en sus piernas—, el presidente ha permitido vislumbrar brevemente sus reflexiones sobre la condición humana y la mortalidad.

Un comentario espontáneo, pronunciado el mes pasado mientras recibía al rey Carlos III en la Casa Blanca, ofreció una ventana reveladora a sus pensamientos. Al hacer referencia al matrimonio de 63 años de duración de sus propios padres, se volvió hacia su esposa, con quien contrajo nupcias hace 21 años.

“Ese es un récord que nosotros no podremos igualar, querida”, dijo el presidente de 79 años. “Lo siento; simplemente no va a suceder de esa manera”.

En público, el presidente ha mantenido una notable sangre fría ante

By Laura Paddison, CNN

(CNN) — Temperature records are being smashed across Europe as parts of the continent swelter in a heat wave that is bringing extreme temperatures alarmingly early in the year.

The continent is grappling with a powerful heat dome, a persistent high-pressure system which acts like a lid on a pot, trapping hot air and pushing it downward. It can remain in place for days or even weeks and is a weather phenomenon made more likely and more intense by human-caused climate change.

On Monday, the UK endured its hottest May day on record, with temperatures spiking to 34.8 degrees Celsius (94.6 Fahrenheit) at Kew Gardens in London, breaking the previous record by 2 degrees Celsius (3.6 Fahrenheit). Usually heat records are broken by only fractions of a degree.

The average high temperature for London in late May is around 20 degrees Celsius (68 degrees Fahrenheit).

As temperatures climbed Monday, a wildfire broke out near Arthur’s Seat, a hill in Edinburgh, Scotland, and hundreds of properties in southeast England were left without water as demand spiked.

There was little respite overnight for the UK, which experienced a “tropical night” where temperatures didn’t fall below 20 degrees (68 Fahrenheit).

These temperatures may not sound extreme but are very uncomfortable — even dangerous — in the UK, where most houses are not insulated well enough to keep out heat and only around 5% of homes have air conditioning. A report last week from the UK’s Climate Change Committee warned the UK was “built for a climate that no longer exists.”

There’s a chance the May record could fall again Tuesday, with the UK’s Met Office forecasting temperatures of 35 degrees Celsius (95 Fahrenheit).

“While we do occasionally have warm spells in May, what we’re seeing now is unprecedented,” said Stephen Dixon, a Met Office spokesperson. Climate change is increasing the chances of breaking May temperature records, Dixon told CNN. “What was around a 1-in-100 year event is now around a 1-in-33 year event.”

The UK isn’t the only place suffering. Much of Western Europe is facing temperatures 10 to 15 degrees Celsius (18 to 27 Fahrenheit) above normal this week.

France is experiencing “unprecedented” heat for this time of year, according to the weather service Météo France, with Monday its hottest May day on record.

The extreme temperatures are having deadly consequences. There have been “seven deaths directly or indirectly linked to the heat, including at least five from drowning, as well as deaths related to extreme heat during sports events,” Maud Bregeon, a French government spokesperson, told Read more

By Laura Paddison, CNN

(CNN) — Temperature records are being smashed across Europe as parts of the continent swelter in a heat wave that is bringing extreme temperatures alarmingly early in the year.

The continent is grappling with a powerful heat dome, a persistent high-pressure system which acts like a lid on a pot, trapping hot air and pushing it downward. It can remain in place for days or even weeks and is a weather phenomenon made more likely and more intense by human-caused climate change.

On Monday, the UK endured its hottest May day on record, with temperatures spiking to 34.8 degrees Celsius (94.6 Fahrenheit) at Kew Gardens in London, breaking the previous record by 2 degrees Celsius (3.6 Fahrenheit). Usually heat records are broken by only fractions of a degree.

The average high temperature for London in late May is around 20 degrees Celsius (68 degrees Fahrenheit).

As temperatures climbed Monday, a wildfire broke out near Arthur’s Seat, a hill in Edinburgh, Scotland, and hundreds of properties in southeast England were left without water as demand spiked.

There was little respite overnight for the UK, which experienced a “tropical night” where temperatures didn’t fall below 20 degrees (68 Fahrenheit).

These temperatures may not sound extreme but are very uncomfortable — even dangerous — in the UK, where most houses are not insulated well enough to keep out heat and only around 5% of homes have air conditioning. A report last week from the UK’s Climate Change Committee warned the UK was “built for a climate that no longer exists.”

There’s a chance the May record could fall again Tuesday, with the UK’s Met Office forecasting temperatures of 35 degrees Celsius (95 Fahrenheit).

“While we do occasionally have warm spells in May, what we’re seeing now is unprecedented,” said Stephen Dixon, a Met Office spokesperson. Climate change is increasing the chances of breaking May temperature records, Dixon told CNN. “What was around a 1-in-100 year event is now around a 1-in-33 year event.”

The UK isn’t the only place suffering. Much of Western Europe is facing temperatures 10 to 15 degrees Celsius (18 to 27 Fahrenheit) above normal this week.

France is experiencing “unprecedented” heat for this time of year, according to the weather service Météo France, with Monday its hottest May day on record.

The extreme temperatures are having deadly consequences. There have been “seven deaths directly or indirectly linked to the heat, including at least five from drowning, as well as deaths related to extreme heat during sports events,” Maud Bregeon, a French government spokesperson, told Read more