How Heavy Should I Lift? A Simple Way to Choose
To choose how heavy to lift, pick a weight that lets you finish your target reps with two or three clean reps still in reserve, and adjust it from one session to the next. You do not need a max test to find it. A short ramp of light-to-heavier sets does the job in a few minutes, and your own sense of effort fills in the rest. A free consultation is a quick way to find your first working weights.
The ramp method
For any lift, use three steps:
- Warm-up set. Pick a weight you are sure is easy and do 10 reps.
- Test set. Add a modest amount and do your target reps, say 10. Notice how the last two feel.
- Working weight. Add again until the last rep is slow but clean, with two or three reps you could still have done. Back off one step. That is your working weight.
It usually takes two or three sets, and it works on machines, dumbbells and barbells. The idea behind it is reps in reserve, explained alongside the effort scale in what is RPE.
What “two or three in reserve” feels like
The set slows down on the last reps, your breathing is heavy and you feel challenged. Your form does not change. If you finish with a spare rep or two, you chose well. If you could have done six more, add weight. If rep six was a grind, lower it.
Rules for the first sessions
| Experience | Reps in reserve target | Typical start |
|---|---|---|
| Brand new to lifting | 3 to 4 | Light, to learn form |
| Returning after a break | 3 | Below what you used to lift |
| Regular lifter | 1 to 3 | Near your last working weight |
| Over 50 or sore joints | 2 to 3 | Moderate and controlled |
Adjusting next time
Use the next session as feedback. If the last set was easy, add the smallest increment available. If it was your best form but tough, hold the weight and try for an extra rep. If form slipped, drop a step. Our page on picking a starting weight goes further on equipment-specific starting points, and the progressive overload guide shows how to keep climbing.
Safety notes
Use safety rails or a spotter on heavy pressing and squatting, and breathe through every rep. Stop a set for sharp pain, numbness or dizziness. If you have heart disease, high blood pressure or a recent surgery, ask your physician which loads are appropriate before going near your limit.
A word on ego and equipment
Gym floors reward lifting what the person next to you lifts, but your working weight only has to match your own effort. Machines differ in friction and leverage, so 100 pounds on one stack can feel like 70 on another. Treat each machine as its own lift, log it separately and ignore the number on the plate.
Getting it right the first time
A coach can set your first weights, teach the cues and show you what two reps in reserve actually feels like, which is the part people struggle to learn from a page. FlexWerk coaches in Carmel each run their own format, and the consultation comes with a free InBody scan. Until then, keep a small notebook of every lift and its weight, so next week you start where you left off instead of guessing again.
Related questions
How do I know what weight to start with on a new machine?
Begin light, do 10 reps, and add weight each set until the last two reps look slow. Use the load one step below that for your working sets.
Should the last rep feel impossible?
Not usually. The last rep should be slow but clean, with a rep or two left in reserve on most sets.
How heavy is too heavy for beginners?
If form changes, your back arches, knees cave or you hold your breath, the weight is too heavy for now.