User talk:Alcatrazisawesome

October 2016

Hello, and welcome to Wikipedia. This is a message letting you know that one or more of your recent edits to Jeremiah has been undone by an automated computer program called ClueBot NG.

• ClueBot NG makes very few mistakes, but it does happen. If you believe the change you made was constructive, please read about it, report it here, remove this message from your talk page, and then make the edit again.
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• The following is the log entry regarding this message: Jeremiah was changed by Alcatrazisawesome (u) (t) ANN scored at 0.890542 on 2016-10-11T18:40:55+00:00 .

Thank you. ClueBot NG (talk) 18:40, 11 October 2016 (UTC)

Navel

Hello. This is a message to let you know that one or more of your recent contributions, such as the edit you made to Navel, did not appear constructive and has been undone. Please take some time to familiarise yourself with our policies and guidelines. You can find information about these at our welcome page which also provides further information about contributing constructively to this encyclopedia. If you only meant to make test edits, please use the sandbox for that. If you think I made a mistake, or if you have any questions, you may leave a message on my talk page. Thank you. Carl Fredrik 💌 📧 19:01, 24 October 2016 (UTC)

Please do not add or change content, as you did at Navel, without citing a reliable source. Please review the guidelines at Wikipedia:Citing sources and take this opportunity to add references to the article. Thank you. bonadea contributions talk 19:35, 24 October 2016 (UTC)

Center of gravity

First of all, we always use sources for our statements on Wikipedia, for proper sourcing you can check WP:MEDRS.
Second, the center of mass or center of gravity moves and is not at all situated at the navel — but when standing inside the body (often said to be at the level of S2). Saying that it is at the navel is a simplification, and also requires the individual to be in the anatomic position. In sports the center of gravity can be outside the body during for example high-jump.
A good overview (though not a good source for Wikipedia): http://www.physio-pedia.com/Centre_of_Gravity . Thanks, Carl Fredrik 💌 📧 21:06, 24 October 2016 (UTC)