Start with a load you can control while you learn the agreed setup and movement. Use the first attempt to gather information, then adjust with your coach. Another person's working weight is not your starting prescription.
The useful question is not “How much should someone like me lift?” It is “Can I perform this exercise as intended, and what should the next attempt change?” That gives the first session a purpose without turning it into a maximum-strength test.
Settle the exercise before judging the weight
A load only makes sense alongside the exercise, equipment, setup and intended movement. Before adding more, make sure you understand where to sit or stand, how to start and finish, and which movement your coach wants you to repeat.
If the equipment is unfamiliar, ask for a demonstration. Do not guess how a safety catch or adjustment works. A stack label also needs the machine's identity: the same displayed number on different equipment is not enough to establish an equivalent task.
If you are still choosing equipment, the free-weights and machines guide addresses that earlier decision. This article starts once you have an exercise to learn.
Make the first attempt informative
I recommend separating a learning attempt from the working load you will record. Begin conservatively with the coach, observe the movement and describe the effort. You do not need to find the heaviest weight you can move to obtain a useful starting point.
If the movement remains repeatable and the effort is clearly manageable, discuss a small adjustment using the equipment's available increments. If the movement becomes inconsistent, pause and establish whether the setup, instruction or load needs changing. Do not assume every difficulty means “try harder”.
This is a coaching process, not a kilogram table. The appropriate first attempt depends on the person and the exercise. Pain or an unusual symptom is a reason to stop and seek suitable advice, not a target level of effort.
Three first attempts, three different decisions
These examples are fictional. They show what to discuss rather than prescribe a workout.
| What happened | What it tells you | Next decision |
|---|---|---|
| Alex repeats the agreed movement and reports that the trial felt very manageable. | The current trial was manageable under that setup. It does not establish a maximum. | Ask whether to make a small load adjustment and reassess. |
| Jordan starts consistently, but later repetitions use a different range and body position. | The attempts are no longer comparable. The reason is not yet established. | Pause; review setup, instruction and load before continuing. |
| Casey cannot explain the machine adjustment and feels discomfort during the attempt. | There is no useful basis for increasing the load. | Stop the attempt. Get equipment instruction and appropriate advice about the discomfort. |
The point is to connect a decision to something observed. “Everyone else uses more” is not an observation about your exercise. “The movement changed when I added the next increment” is.
What the research adds—and what it cannot decide
The 2026 ACSM resistance-training position stand brought together 137 systematic reviews involving more than 30,000 participants. It examined training outcomes in healthy adults, including strength, muscle size and physical function.
That is useful context for building a programme. It does not provide your first working weight for an unfamiliar exercise or validate the decision card below. Recommendations designed to improve a measured outcome over time are not automatically instructions for someone's first attempt.
Keep the distinction clear: research informs the programme; observation and appropriate coaching help apply it to the exercise and person in front of you.
Keep a first-load decision card
Use four fields:
- Exercise and setup: identify the equipment and relevant adjustments.
- Trial completed: record the load and repetitions actually performed.
- Observation: one note about effort or the agreed movement that affects the decision.
- Next step: repeat, adjust or ask for further help, with the reason.
A useful fictional entry is: “Seated row, same machine and seat setting. Trial completed at the recorded load. The agreed range changed near the end. Review before increasing.” It contains more actionable information than “row was hard”.
A recorded number is a starting reference. It is not an instruction to repeat it regardless of changes in equipment, symptoms or circumstances. The strength-training log guide explains how to make later sessions comparable.
Leave with a repeatable next step
Before finishing, check that you know the setup, the starting working load agreed with your coach, and what would make you ask for help next time. That is enough to make the next visit less uncertain.
For the wider first-weeks plan, read how to start strength training from zero. For help selecting and learning suitable exercises, explore personal training at Tempo in Fitzrovia. Bring your current record, even if it contains only a few attempts.
The decision card and examples are original educational tools. They are not validated safety tests or individual medical advice.