Apparently, I’m Not 22 Anymore—So I Tried Creatine

What current research says about strength, recovery, sleep, and aging well

By Mikey Budd, CPT, RYT, DPT Candidate

Reader note: This article is educational and is not individualized medical advice. Supplement decisions should account for health history, medications, and laboratory findings

The short version: Creatine will not turn back the clock, but it may help you get more from your training, hold on to strength as you age, and possibly feel more ready to do it again.

In my early 20s, I could train hard, sleep questionably, go out on a bender and still somehow feel ready to do it all again the next day. In my late 30s, my body is a little less willing to pretend that recovery is optional. The same workouts can create more soreness, and I have to be more thoughtful about sleep, nutrition, and how much stress I pile onto a week.

In high school, I was part of the weightlifting and football team, where many of my peers were taking creatine supplements but I refused. I aways said that I preferred to do things naturally and that creatine was somehow a cheat. Then more research came on about it, the more I saw how it could benefit. Truth be told, I never even really was a fan of protein shakes, but working over 50 hours a week, school for 20 and still trying to have a social life made me realize I couldn't get all the protein I needed to meet my fitness goals. That is one reason I recently started taking creatine. Our body naturally creates it, but as I get older, I noticed my recovery isn't the same and the reality is I don't have a schedule or budget to get weekly massages, do cold plunges or whatever the hell influencers are recommending these days. The biggest differences I have noticed are not dramatic mirror changes or a sudden superhero lift. They're the little differences like being able to sleep better, recovering faster, and feeling more prepared for my next workout.

My experience is personal, not proof. But it sent me into the research—and the evidence suggests that creatine deserves a much broader reputation than “a supplement for bodybuilders.”

Creatine is a rechargeable battery, not a stimulant

Creatine is a naturally occurring compound that your body makes and that you also obtain from foods such as meat and seafood. Most of it is stored in skeletal muscle as creatine and phosphocreatine.

When you lift, sprint, climb, or perform any other short burst of demanding work, your muscles spend adenosine triphosphate, or ATP—the immediate energy currency of the cell. Phosphocreatine helps rebuild ATP quickly. Think of it as a small backup battery that can recharge your muscles during the moments when energy demand is highest. Creatine is not a steroid (in high school I thought it was) and it is not a pre-workout stimulant. You may not feel an immediate “kick.” Its value comes from gradually increasing the energy reserve available to your muscles, which can help you maintain power, complete another quality repetition, or preserve output across repeated efforts (Antonio et al., 2021).

The clearest benefit: more strength and better training capacity

The best-supported benefit of creatine is improved performance during resistance training and other repeated, high-intensity efforts. It does not build muscle in place of training. Instead, it can help you do slightly more productive work—and those small advantages can accumulate over weeks and months.

A 2024 systematic review and meta-analysis found that adults under 50 who combined creatine with resistance training gained more upper- and lower-body strength than those doing the same training with a placebo (Wang et al., 2024). That makes creatine relevant to someone in their late 30s, not just to college athletes or competitive bodybuilders.

Why creatine becomes more interesting with age

A July 2026 narrative review published in the American College of Sports Medicine’s Current Sports Medicine Reports examined supplementation in Masters athletes and adults over age 55. The review included creatine among the major supplements being studied for performance and musculoskeletal health in this population (Nguyen et al., 2026). That distinction matters: advice drawn from 20-year-old athletes does not always transfer neatly to a 60-year-old who wants to stay strong, independent, and active.

Recent pooled evidence is encouraging. A 2025 meta-analysis of eight randomized trials involving 482 older adults found that adding creatine to resistance training improved lean tissue mass and lower-body strength compared with training alone. Some outcomes were mixed, but the overall message was practical: creatine appears to work best as a partner to resistance training, not a replacement for it (Liu et al., 2025).

In other words, the goal is not simply a bigger biceps measurement. Preserving muscle and strength supports the things we want to keep doing—getting off the floor, carrying groceries, climbing stairs, traveling, and continuing to train on our own terms.

What about recovery? The answer is promising—but nuanced

This is where my own experience has been most noticeable, but the research is not perfectly consistent. Some studies report less soreness, lower markers of muscle damage, or a quicker return of muscle function. Other pooled analyses have found little or no meaningful improvement in soreness or strength recovery after damaging exercise (Northeast & Clifford, 2021).

A small 2025 randomized crossover trial in physically active men and women offers a useful middle ground: seven days of creatine loading reduced reported muscle soreness, but it did not improve several other recovery measures over the following 72 hours (Ben Maaoui et al., 2025). So if you feel better between workouts, that experience is plausible—but creatine should not be sold as a guaranteed cure for soreness. It may also improve recovery in a less obvious way: by helping you maintain training quality and tolerate repeated hard efforts. Feeling more capable in the next session is not necessarily the same as speeding every biological repair process, but it can still matter in the real world.

Could creatine really help sleep?

Creatine also supports energy metabolism in the brain, which has led researchers to study cognition, sleep deprivation, and sleep itself. This is an emerging area—not yet as established as the evidence for strength. In a 2024 trial, 21 young women took 5 grams of creatine daily or a placebo while resistance training twice per week. The creatine group slept longer on nights following training, although chronic sleep quality did not improve (Cruz et al., 2024). In the 2025 trial of 14 active men, creatine improved subjective sleep quality, but wrist-based measurements showed no change in total sleep time, sleep efficiency, or time needed to fall asleep (Ben Maaoui et al., 2025).

That means my better sleep may be related to creatine, but the science cannot yet promise the same response for everyone. Creatine is not a substitute for a consistent bedtime, adequate sleep opportunity, stress management, or treatment for a sleep disorder. Still, this early research makes the connection worth watching. The brain story may extend beyond sleep. A 2024 meta-analysis found potential benefits for memory, attention time, and processing speed, although certainty varied by outcome and larger trials are still needed (Xu et al., 2024).

How to keep it simple

Choose creatine monohydrate. It is the form used in most research and there is little reason to pay more for a “designer” version.

Take 3–5 grams every day, including rest days. Consistency matters more than timing. A loading phase—typically 20 grams per day divided into smaller doses for 5–7 days—can fill muscle stores faster, but it is optional. A regular daily dose reaches the same destination more gradually and may be easier on the stomach.

Expect that the scale may rise slightly at first because creatine draws water into muscle cells. That is not the same as gaining body fat. Choosing a product independently tested by a reputable third party can also reduce the risk of contamination or inaccurate labeling.

Is it safe?

For healthy adults using studied doses, creatine monohydrate is generally considered well tolerated. A 2025 systematic review found that supplementation could cause a small rise in blood creatinine—a breakdown product used in kidney testing—without a significant reduction in glomerular filtration rate (Naeini et al., 2025). In other words, a lab value may change without indicating kidney damage, but your healthcare provider should know that you take creatine when interpreting bloodwork.

Anyone with kidney disease, abnormal kidney testing, pregnancy, or medications that affect kidney function should discuss creatine with a physician or registered dietitian before starting. Large single doses can also cause stomach upset, which is another reason to keep dosing modest or divide it.

The takeaway: do not chase your 22-year-old body—support the one you have now

Creatine is not magic or a substitute for progressive training, adequate protein, hydration, or sleep. It may help those habits work better by supporting fast energy production, training capacity, strength, and lean tissue. Evidence for sleep, cognition, and recovery is encouraging, but those benefits are not yet guaranteed. If you train regularly and feel that recovery or maintaining strength has become a bigger challenge, creatine may be worth discussing with your healthcare provider. If it is appropriate for you, try it consistently for 4–6 weeks and track your repetitions, next-day soreness, energy for the following workout, and sleep—not just the scale.

The goal is not to prove that we can still train exactly as we did in our early 20s. The goal is to give the body we have today the tools it needs to keep getting stronger tomorrow.

References

Antonio, J., Candow, D. G., Forbes, S. C., et al. (2021). Common questions and misconceptions about creatine supplementation: What does the scientific evidence really show? Journal of the International Society of Sports Nutrition, 18, 13. https://doi.org/10.1186/s12970-021-00412-w

Ben Maaoui, K., Delleli, S., Mahdi, N., et al. (2025). Effects of creatine monohydrate loading on sleep metrics, physical performance, cognitive function, and recovery in physically active men: A randomized, double-blind, placebo-controlled, crossover trial. Nutrients, 17(24), 3831. https://doi.org/10.3390/nu17243831

Cruz, A. J. A. B., Brooks, S. J., Kleinkopf, K., et al. (2024). Creatine improves total sleep duration following resistance training days versus non-resistance training days among naturally menstruating females. Nutrients, 16(16), 2772. https://doi.org/10.3390/nu16162772

Liu, S., Huang, N., Wu, W., et al. (2025). The impact of creatine supplementation associated with resistance training on muscular strength and lean tissue mass in the aged: A systematic review and meta-analysis. European Review of Aging and Physical Activity, 22, 26. https://doi.org/10.1186/s11556-025-00392-9

Naeini, E. K., Eskandari, M., Mortazavi, M., Gholaminejad, A., & Karevan, N. (2025). Effect of creatine supplementation on kidney function: A systematic review and meta-analysis. BMC Nephrology, 26, 622. https://doi.org/10.1186/s12882-025-04558-6

Nguyen, C., Allen, M. R., Hornburg, K., & Fredericson, M. (2026). Effects of supplementation in Masters athletes and older adults: A narrative review. Current Sports Medicine Reports, 25(7), 216–223. https://doi.org/10.1249/JSR.0000000000001353

Northeast, B., & Clifford, T. (2021). The effect of creatine supplementation on markers of exercise-induced muscle damage: A systematic review and meta-analysis of human intervention trials. International Journal of Sport Nutrition and Exercise Metabolism, 31(3), 276–291. https://doi.org/10.1123/ijsnem.2020-0282

Wang, Z., Qiu, B., Li, R., et al. (2024). Effects of creatine supplementation and resistance training on muscle strength gains in adults <50 years of age: A systematic review and meta-analysis. Nutrients, 16(21), 3665. https://doi.org/10.3390/nu16213665

Xu, C., Bi, S., Zhang, W., & Luo, L. (2024). The effects of creatine supplementation on cognitive function in adults: A systematic review and meta-analysis. Frontiers in Nutrition, 11, 1424972. https://doi.org/10.3389/fnut.2024.1424972

Reader note: This article is educational and is not individualized medical advice. Supplement decisions should account for health history, medications, and laboratory findings