Yeah. It's always good to ask. Normally, I would tell someone to google a term they are not familiar with or go straight to wikipedia. The problem is that a PR search will get you a boatload of hits for "Public Relations". But, a 1RM search will get you a lot of information on "1 Repetition Maximum".
There are 1RM/3RM/5RM calculators that estimate a given rep max from other multiple rep attempts but they are only estimates. For me, they are actually pretty good but I try do avoid using them because 1) I have fun making a 1RM attempt and 2) I don't want some formula to dictate what I can lift
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Speaking of asking a question, this thread is an example of me asking a question regarding something I already know. However, I am always interested in finding out what
others know. You can never tell whether someone else has a suggestion about doing something slightly different than what you had been doing that results in you doing something better than before. In this case, I probably wouldn't have waited up to 5 minutes between attempts as Kane suggested. I am going to try it.