Does Creatine Work Without Exercise? What a New 12-Week Study Found

If you've ever skipped a week of workouts and wondered whether your creatine was wasted, this is the study I'd send you.

Creatine has a reputation as a gym supplement: you lift, you take creatine, you lift a little more. So it's fair to ask: does creatine work without exercise?

A new study from Texas A&M University put that to the test in adults aged 45 to 65 who weren't exercising. It was published in August 2026 in the Journal of the International Society of Sports Nutrition, and the answer is yes.¹ Creatine on its own increased lean mass and strength over 12 weeks, and pairing it with training did even more.

What the study did

The team at Texas A&M's Exercise and Sport Nutrition Lab, led by Richard Kreider, who has studied creatine for more than 30 years, recruited healthy adults aged 45 to 65 who weren't exercising. Sixty-four finished the full 12 weeks: 40 women and 24 men, with an average age of 54.5.

Each person chose whether to join a supervised exercise and diet program or carry on as usual. Within each group, they were then randomly assigned to creatine monohydrate or a placebo, double-blind, so neither they nor the researchers knew who was taking what.

Everyone took two 5 g servings a day, one in the morning and one in the evening, for 10 g a day in total. The researchers measured body composition with a DXA scan, tested strength on the bench press and leg press, and ran blood work at the start, at 6 weeks and at 12 weeks.

Without exercise: more lean mass and more strength

This is the result that made headlines. The no-exercise creatine group gained about 1.1 kg (2.4 lb) of lean mass over 12 weeks, while the no-exercise placebo group gained none.

That gain was larger than in either placebo group, including the one that trained three times a week while eating 300 to 500 fewer calories a day, which gained about 0.3 lb.

Strength improved too. With no training at all, the creatine group's bench press and leg press both went up, and the bench press gain was significantly larger than with placebo. Muscular endurance improved as well.

With training and a diet: the biggest gains

The other half of the study looked at people doing the work: supervised weights plus about 20 minutes of cardio, three times a week, alongside a modest calorie cut.

Cutting calories usually costs some muscle along with the fat. Here, the placebo group held their lean mass steady, and the creatine group gained about 1.27 kg (2.8 lb) of it by week 12.

Body fat percentage fell further too: 3.2 points with creatine, vs 1.9 with placebo. The researchers believe it's the first study to show creatine cutting body fat percentage more than diet and exercise alone.

The creatine group also made the biggest strength gains of anyone in the study, on both leg press and bench press, and lasted longer on a treadmill test.

The dose: 10 g a day, in two servings

The usual daily dose of creatine is 3 to 5 g. This study used 10 g, split between morning and evening, because higher doses are thought to be needed to raise creatine levels in the brain, and the team was also measuring memory and thinking.

To match the study, two scoops of ThriveOn Creatine a day get you to 10 g. If you already take Stronger, each sachet has 5 g of the same creatine, so Stronger plus one scoop does it. Check with your doctor before changing your dose.

There was no loading phase: participants took 10 g a day from day one. If you're weighing a loading week, see Creatine Loading Phase: Do You Need One?

The creatine they used

The paper names it: Creavitalis® creatine monohydrate, made by Alzchem in Trostberg, Germany. It's the creatine in ThriveOn Creatine and in every Stronger sachet.

Creavitalis® is more than 99.9% pure and ground finer than a human hair, so it dissolves clear with no residue in water or any drink of choice, coffee included. Every batch of ThriveOn Creatine is tested.

How solid is it?

It's a randomized, double-blind, placebo-controlled trial, the design researchers rely on most for supplements. It's also small and short: about 13 people in each no-exercise group, followed for 12 weeks.

A DXA scan counts the water held inside muscle as lean mass, and creatine draws water into muscle cells, so part of the lean-mass gain may be water. Strength rose as well, though, and water alone doesn't make you stronger.

The study was funded by a foundation gift to Texas A&M. Alzchem supplied the creatine, and Kreider chairs Alzchem's scientific advisory board, which the paper discloses.

Is 10 g a day safe?

Supplementation was well tolerated. Side effects were rare, mild and similar between creatine and placebo, and nobody left the study because of the supplement.

Blood work showed one expected change. Creatinine, which doctors use to estimate kidney function, rose slightly in the creatine groups and stayed within the normal range. eGFR, which is calculated from creatinine, dipped but also stayed normal. Creatine raises creatinine on its own, and the authors say the change shouldn't be read as reduced kidney function. If you take creatine, mention it to your doctor before your next blood test. More in Is Creatine Safe for Women?