How to pick your starting weight

Why most people start too heavy

Almost everyone starts too heavy. It's the single most common mistake in a first month of training, and it costs more than it looks like it should.

A weight you can barely move teaches you the wrong movement. You learn to heave, round your back, and bounce out of the bottom, and those habits are harder to remove later than they are to avoid now. A weight you can control teaches you the actual lift.

There's also a math problem. If you start at your absolute limit, you have nowhere to go next week. If you start 30 lb below it, you get six weeks of adding weight before you have to work for it. Six weeks of easy progress is worth more to a beginner than one impressive first session.

Barbell lifts: start with the empty bar

Every barbell lift starts the same way: put the bar on the rack with nothing on it, and do 5 reps.

The standard Olympic bar is 45 lb, or 20 kg. That is not a warm-up weight for someone new. Plenty of people find an empty bar overhead press genuinely hard on day one, and that's a normal place to be.

Do 2 sets of 5. If both sets feel steady and you can pause at the bottom without shaking, add 10 lb and try again. Keep going until a set of 5 starts to feel like work. That's your starting weight.

Two exceptions. On the barbell deadlift, load 45 lb plates even if that's more weight than you want, because they set the bar at the correct height off the floor. If 135 lb is too much, put the bar on blocks instead of using smaller plates. And on the Romanian deadlift, start lighter than your other lifts: it trains your hamstrings, not your whole body, and 95 lb done properly is enough to leave you sore for two days.

Machines: count reps, not plates

Machine stacks are not comparable between machines, or between gyms. A "60" on one leg press is nothing like a "60" on another. So stop reading the number and count reps instead.

Pick something that looks light. Do 8 reps. If it was easy, go up one plate and repeat. When 8 reps gets you to the point where two more would be a struggle, that's your weight.

Write the number down anyway, because it'll be consistent on that specific machine, and that's what you need for next week.

Cables behave the same way. On a triceps pushdown or a dumbbell row, the stack number will transfer between sessions at your gym and mean nothing anywhere else.

Dumbbells: two different answers

Dumbbells split into two groups, and the right starting weight is very different for each.

For pressing and rowing, where several large muscles work together, most people start somewhere around 20 to 30 lb per hand. A dumbbell bench press at 20 lb per side is a reasonable first attempt, and a dumbbell row at 25 or 30 lb usually is too.

For anything that isolates one small muscle, start much lighter than you think. A side lateral raise with 5 or 10 lb dumbbells is correct, and that is not a typo. It's a small muscle working through a long lever, so the usable weight is small and it goes up slowly. Same for barbell curl work: a weight you can lift for 10 controlled reps builds more arm than a weight you have to swing for 5.

Bodyweight: pick reps instead

Some exercises don't have a weight to pick, so the question becomes how many reps.

For plank, aim for 20 to 30 seconds on your first attempt, in three sets. Not the two minutes you've seen posted. Three sets of 20 clean seconds beats one shaky minute.

For pull-ups, most beginners can't do one, and that's the normal starting point. If you can do zero to two, use the assisted machine or do negatives: jump to the top, then lower yourself as slowly as you can. Three sets of three negatives, twice a week, and most people get a full rep inside two months. Meanwhile, build the strength on the lat pulldown, where you can pick any weight you like.

How to know you got it right

After every set, ask one question: could I have done two more reps?

Two more reps in the tank is the target. Three or four means go heavier next set. Zero means the weight is too heavy, and you should drop it now rather than finish the session having practiced bad reps.

This works because it doesn't depend on knowing your one-rep max, doing any arithmetic, or being honest about your ego in a way most people aren't yet. It's a feel you develop over about three sessions.

What to do next week

Once you have a starting weight, the plan is simple and boring: add a little, often.

Add 5 lb per session on upper body lifts like the bench press and the overhead press. Add 10 lb per session on lower body lifts like the barbell squat and the barbell deadlift. Lower body lifts use more muscle and tolerate bigger jumps.

When you miss reps two sessions in a row at the same weight, drop back 10 percent and build up again. That isn't failure, it's how the whole thing works, and it will happen to you within a few months no matter how carefully you start.

For the full method, including what to do with dumbbells and bodyweight exercises, read the guide to progressive overload for beginners.