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  2. Free Thinking - Wikipedia

    en.wikipedia.org/wiki/Nightwaves

    The programme is a rebranded version of Night Waves, "Radio 3's flagship arts and ideas programme". [2] Night Waves was broadcast every Monday to Thursday evening, except during the Proms season . Radio 3 rebranded Night Waves as Free Thinking from 7 January 2014, and reduced the number of first-time broadcasts per week from four to three (plus ...

  3. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    14 to 17 hours Infants (4–11 months) 12 to 15 hours Toddlers (1–2 years) 11 to 14 hours Preschoolers (3–4 years) 10 to 13 hours School-age children (5–12 years) 9 to 11 hours Teenagers (13–17 years) 8 to 10 hours Adults (18–64 years) 7 to 9 hours Older Adults (65 years and over) 7 to 8 hours

  4. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    The brain transitions from alpha waves having a frequency of 8–13 Hz (common in the awake state) to theta waves having a frequency of 4–7 Hz. Sudden twitches and hypnic jerks , also known as positive myoclonus , may be associated with the onset of sleep during N1.

  5. Do you really need 8 hours of sleep every night? Sleep ... - AOL

    www.aol.com/news/really-8-hours-sleep-every...

    Some individuals can sleep four hours a night and function normally without facing any harmful effects — but these so-called "short-sleepers" have a rare genetic mutation and only make up a tiny ...

  6. Noise regulation - Wikipedia

    en.wikipedia.org/wiki/Noise_regulation

    Chicago, IL (Section 11-4-2820) considers the sound to be a noise disturbance in residential areas if the sound exceeds 5 minutes in any hour; steam whistles are exempt. Albuquerque, NM (Section 9-9-12) restricts levels to 5 dB over the ambient at a property line and applies maximum permissible residential level as well as plainly audible ...

  7. Day–evening–night noise level - Wikipedia

    en.wikipedia.org/wiki/Day–evening–night_noise...

    The day–evening–night noise level or L den is a 2002 European standard to express noise level over an entire day. It imposes a penalty on sound levels during evening and night [ 1 ] and it is primarily used for noise assessments of airports , busy main roads, main railway lines and in cities over 100,000 residents.

  8. How to Live on 24 Hours a Day - Wikipedia

    en.wikipedia.org/wiki/How_to_Live_on_24_Hours_a_Day

    View the 24-hour day as two separate days, one encompassing the 8-hour workday and the other a 16-hour personal day to be accounted for and utilized. Train your mind daily to focus on a single thing continuously for an extended period, 50 minutes in his "average case" example. Reflect on yourself.

  9. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!