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  2. Traditional sit-ups and crunches are terrible for you ... - AOL

    www.aol.com/article/lifestyle/2019/07/09/...

    Here are a handful of reasons why trainers, exercise scientists, and the US military all dislike traditional crunches and sit-ups, along with their recommendations for better core moves.

  3. Presidential Fitness Test - Wikipedia

    en.wikipedia.org/wiki/Presidential_Fitness_Test

    [8] [9] The council adopted and expanded on the testing items from a California testing program, deciding that the basic test would consist of 6 parts: 1) Pull-ups (for boys), modified pull-ups (for girls), 2) sit-ups, 3) shuttle run, 4) standing broad jump, 5) 50-yard dash, and 6) softball throw for distance.

  4. How To Decide Whether To Do Sit-Ups Or Crunches In Your ... - AOL

    www.aol.com/lifestyle/heres-trainers-decide...

    Here's a breakdown of crunches vs. sit-ups benefits, risks, and form per trainers. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

  5. Sit-up - Wikipedia

    en.wikipedia.org/wiki/Sit-up

    Sit-up form. The sit-up is an abdominal endurance training exercise to strengthen, tighten and tone the abdominal muscles.It is similar to a curl-up (that target the rectus abdominis and also work the external and internal obliques), but sit-ups have a fuller range of motion and condition additional muscles.

  6. Sound reinforcement system - Wikipedia

    en.wikipedia.org/wiki/Sound_reinforcement_system

    A sound reinforcement system for a rock concert in a stadium may be very complex, including hundreds of microphones, complex live sound mixing and signal processing systems, tens of thousands of watts of amplifier power, and multiple loudspeaker arrays, all overseen by a team of audio engineers and technicians.

  7. Sit a lot? The 1 stretch you should be doing every day - AOL

    www.aol.com/news/1-stretch-combat-effects...

    The 1 stretch you should be doing every day. Stephanie Mansour. August 30, 2024 at 6:05 PM ... Sitting all day at a desk is a main culprit of hip pain, since sitting with poor posture can increase ...

  8. For perfect abs, ditch the sit-ups and do this instead - AOL

    www.aol.com/lifestyle/2017-03-14-sit-ups-not...

    For premium support please call: 800-290-4726 more ways to reach us

  9. Home audio - Wikipedia

    en.wikipedia.org/wiki/Home_audio

    Modern home cinema systems typically augment the audio output from a DVD player or Blu-ray player with a multi-channel power amplifier and anywhere from two speakers and a stereo power amp (for stereo sound) to a 5.1 channel amplifier and five or more surround sound speaker cabinets (with a surround sound system).