Skipping warm-ups, copying someone else's program, and chasing soreness instead of progress — here's what to fix first.
Most beginner mistakes in the gym aren't about effort — new lifters usually work hard. They're about direction: doing the wrong things intensely instead of the right things consistently.
Switching plans every 1-2 weeks because progress feels slow means you never actually see whether the plan was working. Give a program at least 6-8 weeks before judging it.
Jumping straight to a heavy working set cold increases injury risk and usually means the first working set is weaker than it should be. A couple of light-to-moderate ramp-up sets fix both problems.
Being sore doesn't mean a workout "worked," and not being sore doesn't mean it didn't. The number that matters is whether the weight, reps, or reps-in-reserve are trending up over weeks, not how you feel the next day.
A plan built for someone else's goals, training age, and schedule rarely fits yours. This is the core reason generic PDFs underperform a program actually built around you and adjusted as you progress.