MariposasPersonal Record (PR)
A personal record, usually shortened to PR, is the best performance you have ever achieved in a specific exercise or fitness test. That might be the heaviest weight lifted for a given rep count, the fastest mile you have run, or the most pull-ups completed in a single set. The key word is personal. A PR is measured only against your own history, not against anyone else in the gym or on the leaderboard. The nuance most people miss is that a PR is always rep-and-condition specific. A one-rep max deadlift PR and a five-rep deadlift PR are completely separate records, and treating them as interchangeable leads to sloppy programming. Chasing PRs too frequently is also a common mistake. Because a true PR demands a near-maximal effort, attempting one every session burns out the nervous system fast and raises injury risk, so most experienced lifters reserve PR attempts for planned peaks after a proper buildup.
Example
A lifter has squatted 225 pounds for five reps as her best effort on record. After twelve weeks of progressive overload, she successfully completes five clean reps at 235 pounds, setting a new five-rep PR. Her one-rep max record stays unchanged unless she tests that separately.