How to Choose the Right Weight for Each Exercise

Choosing the right weight is not about finding one perfect number forever. It is about selecting a load that lets you complete the target reps with controlled technique and enough effort to create a useful training stimulus.

Start conservatively, then use the first working set as information. A weight that looks impressive on paper is not useful if it changes the exercise or makes the rest of the workout impossible.

Start With the Target Reps

A set of five, ten or twenty reps should not feel identical, so they should not use the same load. Pick a conservative starting weight, especially when the exercise is new, and adjust after you feel the movement.

Use Reps in Reserve

Reps in reserve means estimating how many good reps you could still complete at the end of a set. Finishing with roughly one to three reps in reserve works well for many working sets.

If you could have done ten more reps, the weight is probably too light. If you miss the target immediately or your technique changes dramatically, it is too heavy.

Let Technique Set the Ceiling

The heaviest useful weight is the heaviest weight you can control through the intended range of motion. Do not turn a squat into a partial, a row into a shrug or a curl into a swing just to move more weight.

Progress Gradually

A simple double-progression approach works well: keep the same weight until you reach the top of the rep range for all planned sets, then add a small amount and build back up.

Small jumps are easier to sustain than chasing a personal record every session.

Track What You Actually Did

Record the exercise, load, reps and any useful note about effort or technique. Gym Log keeps that history on your workout calendar so your next weight choice is based on evidence instead of memory.

The Bottom Line

Choose a weight that lets you hit the target reps with controlled technique and a small amount of effort left. The right weight is not the heaviest weight you can move once; it is the heaviest weight you can train well enough to repeat and improve.