Exercise technique: the most important thing!

Once on the Internet, I came across the following message: Do you guys use PB Warm-UPS?I have two questions:1) If you don't, why are they called that, and not, like, normal warm-up?2) And how many of them should I use, and how many repetitions should I do, to get the desired results?Sincerely, your humble servant, I advise you to read this and other messages on the site, so that you don't miss out on useful knowledge! The most important thing is not to " screw up " your workout plan by not following the right technique, and to " soak in the moment " and " get high " high!