Mark it once you can do it without this page open.

How to do it

  1. Decide how many reps you plan to do, or ask a qualified coach, before you choose a weight.
  2. Do your first set with bodyweight, an empty bar or the lightest dumbbell.
  3. Try the next weight up for the next set only if every rep looked and felt the same.
  4. Stop at the weight where the reps start to slow down or your form starts to change.
  5. Use that weight for the rest of the session and write it down.
  6. Stay at that weight until every rep of every set looks the same.
  7. Drop the weight back at once if form breaks, pain appears or you have to hold your breath to grind a rep.

Stop and call a professional if

  • You have a heart condition, high blood pressure, a recent injury or surgery, or you are unsure whether exercise is safe for you: ask a clinician before you start.
  • You feel chest pain, pressure, faintness or unusual breathlessness: stop and call your local emergency number, 911 in the US.
  • A new lift causes pain, not just effort, at any weight: stop and ask a clinician or physical therapist, or book a session with a qualified coach.

Common mistakes

  • Copying the weight the person before you used.
  • Taking big jumps between sets.
  • Chasing numbers while the form changes rep by rep.

Quick self-check

Three questions. Your last score is kept in this browser.

1. How should the reps at a good starting weight look?
2. What do you do at your next session with that weight?
3. Your form breaks halfway through a set. What do you do?

Teach this to someone

A one-page sheet for showing a friend, a roommate or a kid: what to say, what to show, and one question to check it landed.

Sources

  • National strength and conditioning coaching guidance on exercise technique, 2025. Checked September 28, 2026.

Last reviewed . First published .