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  2. Grade retention - Wikipedia

    en.wikipedia.org/wiki/Grade_retention

    Grade retention or grade repetition is the process of a student repeating a grade after failing the previous year.. In the United States of America, grade retention can be used in kindergarten through to third grade; however, students in high school are usually only retained in the specific failed subject.

  3. Hikikomori - Wikipedia

    en.wikipedia.org/wiki/Hikikomori

    Many adolescents take one year off after high school to study exclusively for the university entrance exam, and are known as ronin. [52] More prestigious universities have more difficult exams. The most prestigious university with the most difficult exam is the University of Tokyo .

  4. Extracurricular activity - Wikipedia

    en.wikipedia.org/wiki/Extracurricular_activity

    Other studies have shown being involved in extracurricular activities reduces the likelihood of dropping out of school, likelihood of committing a criminal offence, and leads to higher educational retainment and success and achievements in school work, [3] not to mention that the greatest advantage of participating in at least one of these ...

  5. Operant conditioning - Wikipedia

    en.wikipedia.org/wiki/Operant_conditioning

    The rules specify either the time that reinforcement is to be made available, or the number of responses to be made, or both. Many rules are possible, but the following are the most basic and commonly used [19] [9] Fixed interval schedule: Reinforcement occurs following the first response after a fixed time has elapsed after the previous ...

  6. Fitness Instructors Over 50 Share 8 Tips for Staying Active ...

    www.aol.com/fitness-instructors-over-50-share...

    These fitness pros break down their best tips to stay active as you age and continue to lead a healthy lifestyle.Getting in daily exercise and movement is a beneficial form of maintenance for your ...

  7. Physical Activity Guidelines for Americans - Wikipedia

    en.wikipedia.org/wiki/Physical_Activity...

    Both aerobic (endurance) and muscle-strengthening (resistance) physical activities are beneficial. Bone-strengthening activities are also important for children and adolescents. The benefits of physical activity far outweigh the possibility of adverse outcomes. Regular physical activity is one of the most important things you can do for your ...

  8. The Biggest Fitness Fails You Can Make After 50 - AOL

    www.aol.com/biggest-exercise-mistakes-age-50...

    Fitness Fails. You might think you're doing everything right to stay fit, but some "healthy" habits can be counterproductive. As you age, your body becomes more rigid and less flexible, and if you ...

  9. “History Cool Kids”: 91 Interesting Pictures From The Past

    www.aol.com/lifestyle/history-cool-kids-91...

    Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...