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Bulking vs Cutting: Should You Bulk or Cut First?

Bulking vs Cutting: Should You Bulk or Cut First?

Posted by SDI Labs on Oct 20th 2026

It depends on where you're starting. If you're fairly lean and want more muscle, start with a slow, controlled bulk. If you're carrying more body fat, cut first. If you're new to lifting or coming back after a break, a recomposition phase near maintenance calories can build muscle while you lean out.

That's the short version, and it broadly lines up with what coaches at Built With Science, RippedBody and Outlift recommend. The rest of this guide helps you figure out which group you're in, without a body-fat test.

Bulking vs cutting: what each one means

Bulking

A bulk is a planned period of eating in a small calorie surplus while training hard, with the goal of gaining muscle while keeping fat gain limited. It isn't a "dirty bulk" where you eat everything in sight. A bigger surplus mostly means more fat to lose later.

Cutting

A cut is a period of eating in a calorie deficit while you keep lifting and keep protein high. The goal is to lose fat while holding on to the muscle you've built.

Recomp

Body recomposition ("recomp") means eating around maintenance calories while training, so you build some muscle and lose some fat while your weight stays fairly stable. RippedBody recommends it mainly for "relatively newer trainees and those coming back from a relatively long training layoff" (RippedBody). Progress is slower and harder to measure than a bulk or a cut.

A note on the word "cycle"

On this site you'll see "bulking" and "cutting" used a lot. In this article, bulk and cut mean diet and training phases. They are not steroid "cycles." Anabolic steroids are prescription drugs, and misusing them carries serious risks, including high blood pressure, blood clots, heart attack, stroke and liver damage (Cleveland Clinic). Nothing here involves them.

Should you bulk or cut first? A 60-second decision guide

You don't need a body-fat percentage for this. Use what you can see and measure: your waist, how your clothes fit, your strength trend, and how long you've been training seriously.

Lean, waist small and steady, clothes loose, strength stalled for months

Start with

Bulk (small surplus)

Why

You have room to add muscle before fat gain becomes a problem

Carrying more fat, waist trending up, clothes getting tight

Start with

Cut, or a recomp if you're new to lifting

Why

Getting leaner first makes the next bulk more comfortable

New to lifting, back after a long break, or "skinny fat"

Start with

Recomp, or a short cut

Why

Beginners and returning lifters can often build muscle near maintenance

Lean and experienced, happy with your current fat level

Start with

Your choice

Why

Pick based on your goal: more size (bulk) or more definition (cut)

If you want reference numbers, RippedBody publishes body-fat ranges by training experience in its guide (RippedBody). Treat them as one coach's guidelines, not hard rules.

If you're "skinny fat"

"Skinny fat" usually means not much visible muscle, plus some fat around the middle. This is where the experts differ:

  • RippedBody suggests that novices who aren't clearly under- or overweight consider a recomp (RippedBody).
  • Outlift says skinny-fat lifters "can bulk or cut," and that you can probably gain some muscle even while cutting (Outlift).

Our suggestion (a practical default, not a research finding): train hard at about maintenance calories with high protein for 8–12 weeks, then reassess using the measurements below. If your waist is shrinking and your lifts are going up, keep going. If nothing is changing, pick a direction: a small surplus or a modest deficit.

Whatever you pick, give it time. On how long to commit before switching, Built With Science's answer is "usually several weeks, not a few days" (Built With Science).

How long should you bulk before cutting?

Long enough to see a real trend: months, not weeks. RippedBody recommends bulking for "ideally, ten months before cutting" so the muscle-building process has time to produce measurable progress (RippedBody). Other coaches use shorter phases. There's no single right number.

Practical switch rules:

  • End a bulk when your waist and fat gain are outpacing your strength gains, or you're simply no longer comfortable with how lean you are.
  • End a cut when you've reached the leanness you wanted, or when your strength is dropping sharply. That usually means the deficit is too aggressive or you've cut long enough.

How to cut without losing muscle

  1. Keep lifting heavy. Training is the signal to keep your muscle. Don't switch to light "toning" work during a cut.
  2. Keep protein high. The NIH ODS lists 1.2–2.0 g of protein per kilogram of body weight a day for athletes. It also notes that high-protein diets of two to three times the RDA don't appear to compromise kidney function in healthy adults (NIH ODS). If you have a kidney condition, ask your doctor first.
  3. Use a moderate deficit, not a crash diet. If your lifts drop sharply, eat a bit more.
  4. Consider creatine in both phases. Creatine is one of the best-studied supplements for high-intensity training performance, at a standard 3–5 g a day (NIH ODS; Kreider et al., 2017).* See our creatine monohydrate guide for dosing.

What to track each week

Pick a few simple numbers and track them the same way every week:

  • Weekly average body weight. Weigh in on several mornings and average them; single weigh-ins bounce around.
  • Waist measurement, once a week, under the same conditions.
  • Two key lifts. If strength nosedives on a cut, the deficit is too big. If nothing improves on a bulk, you may not be eating enough.

This approach comes from Built With Science. It lets you judge a phase on trends instead of on one good or bad day.

Where supplements fit (and where they don't)

Food, training and sleep do the work in both phases. Supplements are a small add-on, not the plan.

If you add one, creatine monohydrate is a sensible choice because it fits both a bulk and a cut. Samson Summit is creatine monohydrate and nothing else:

  • 5 g of creatine monohydrate per scoop. That's the whole ingredient list.
  • Unflavored and micronized, so it mixes into water, a shake or your pre-workout.
  • 60 servings per 300 g tub.
  • Vegan, gluten-free and made in the USA.

Creatine supports strength and power in high-intensity training.* It won't decide whether you should bulk or cut, and it doesn't replace either one.

FAQ

Should I bulk or cut first?

If you're fairly lean and want more muscle, bulk first with a small surplus. If you're carrying more fat, cut first. If you're new to lifting or returning after a break, a recomp near maintenance calories is a good option.

Should I bulk or cut if I'm skinny fat?

Coaches disagree, and both can work. A practical default is to train hard at about maintenance with high protein for 8–12 weeks, then reassess. If you're not seeing progress, choose a small surplus or a modest deficit.

How long should I bulk before cutting?

Months, not weeks. RippedBody recommends ideally about ten months; other coaches use shorter phases. End a bulk when fat gain outpaces strength gains or you're no longer comfortable with your leanness.

How do I cut without losing muscle?

Keep lifting heavy, keep protein high, and use a moderate deficit instead of a crash diet. If your strength drops sharply, the deficit is probably too aggressive.

What is a bulking cycle?

In training terms, it's a planned bulking phase: a period of a small calorie surplus plus hard training to build muscle. If someone talks about a supplement "stack," that just means a set of dietary supplements taken together during a phase.

What is the best stack for bulking that does not include steroids?

Start with the basics: enough calories and protein, a progressive strength program, and good sleep. If you want a supplement, creatine monohydrate is one of the best-studied options for training performance.*

Sources


These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Talk to your physician before using any dietary supplement or starting a new diet or training program, especially if you take medication or have a medical condition. Not intended for anyone under 18.