Can a calming herbal supplement really help you build more muscle, recover faster, and boost strength over time?
According to a recent comprehensive review published in the Journal of Nutrition and Metabolism, that’s exactly what ashwagandha might offer.
While not a miracle pill, this ancient herb appears to deliver several meaningful benefits—especially if you’re stressed out, recovering from hard training, or looking for a small edge in strength or size.
The study, conducted by researchers in Poland in February 2025, breaks down the mechanisms, known benefits, and athletic implications of withania somnifera (ashwagandha) supplementation.
Let’s explore what the science says—and how it might help you see more gains in the gym, in a calmer, more balanced way.
Jump to:
- Key takeaway: Ashwagandha helps recovery, reduces stress, and boosts performance moderately
- How it boosts muscle and strength
- Ashwagandha improves aerobic capacity in a unique way
- Stress reduction and hormone optimization
- Better recovery and lower anxiety
- Can ashwagandha help long-term muscle growth?
- Other potential benefits
- Who might see the biggest benefits?
- Limitations of the current research
- How to take ashwagandha
- The bottom line
Key takeaway: Ashwagandha helps recovery, reduces stress, and boosts performance moderately
Ashwagandha isn’t a miracle supplement that will transform your physique overnight.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
But it is surprisingly effective as a multi-purpose support tool—especially for athletes or gymgoers dealing with high stress, sleep issues, or fatigue.
The review found that ashwagandha can:
- Increase lean muscle mass modestly over 8–12 weeks
- Boost strength (1-rep max) by 5–8%
- Improve V̇O₂ max (cardiovascular endurance) significantly
- Reduce cortisol levels consistently and effectively
- Enhance perceived recovery and reduce soreness
- Support mental health with mild anti-anxiety effects
These benefits were most consistently seen when taking 600 mg of high-quality ashwagandha extract (like KSM-66) daily, typically in the morning.
How it boosts muscle and strength
When it comes to building lean mass, ashwagandha offers a mild but measurable effect.
Studies showed a gain of a few pounds of lean mass after 8 to 12 weeks of supplementation—working out to about 25–40% of creatine’s known muscle-building effects.
That’s impressive, considering creatine is the gold standard legal supplement for hypertrophy.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Strength gains were even more notable, with research showing 5 to 8% increases in 1-rep max lifts such as the bench press and squat—roughly 40–60% of creatine’s effect size.
And while benefits on power and explosive performance were smaller, there was enough research to suggest a small performance edge over time.
Ashwagandha improves aerobic capacity in a unique way
One of the standout findings was its ability to consistently increase V̇O₂ max—a measure of cardiovascular fitness.
Several randomized controlled trials reported upgrades of approximately 4 to 5 mL/kg/min after 8–12 weeks.
This is significant for both athletes and recreational lifters, since improved aerobic capacity may help with:
- Better recovery between sets
- More efficient fat metabolism
- Greater volume tolerance during high-rep work
Unlike standard cardio training, this increase comes without potentially compromising hypertrophy adaptations.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Stress reduction and hormone optimization
Ashwagandha’s most consistent and well-supported benefit is its ability to reduce cortisol levels.
This matters—because chronically elevated cortisol impairs muscle growth, increases fat storage, disrupts sleep, and leads to overall fatigue.
In parallel, studies also showed a slight increase in testosterone levels—within the normal healthy range.
Combined, this hormone shift supports a more anabolic, less catabolic internal environment. In simpler terms: less stress = better gains.
Better recovery and lower anxiety
Many participants across trials reported improved perceived recovery and lower muscle soreness.
These improvements were modest (10–20%) but appeared consistently, especially in people under stress.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
The anxiety-lowering effects weren’t massive, but they were consistent—especially for those dealing with chronic stress.
The likely mechanism? Cortisol reduction. Lower stress hormone levels often calm the nervous system and improve sleep quality and duration.
Can ashwagandha help long-term muscle growth?
In early-stage animal data, ashwagandha has shown increased activity of satellite cells—specialized muscle precursor cells involved in muscle repair and hypertrophy.
While this hasn’t been confirmed in humans, it raises an intriguing possibility: ashwagandha may support better long-term muscular adaptation when combined with progressive resistance training.
Still speculative—but a potential signal that warrants future research.
Other potential benefits
Researchers also explored effects on health outcomes like blood sugar, lipids, appetite, and aging-related cognition:
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
- Blood glucose: Modest reductions in fasting glucose and A1C
- Lipids: Slight drops in LDL and triglycerides
- Appetite: Unclear or minimal effect (possibly helpful for stress eaters only)
- Aging and cognition: Minor improvements in memory and reaction time in older adults
None of these effects are major, but they add to the argument that ashwagandha may offer general health support, not just performance benefits.
Who might see the biggest benefits?
You may benefit most from ashwagandha if you:
- Train hard and need fast recovery
- Feel burned out, anxious, or overstressed
- Sleep poorly during training blocks
- Have long sets or short rest periods that tax your conditioning
If you’re already low stress, well-recovered, and following a regimented sleep schedule, the effects might be smaller—but still present.
Limitations of the current research
The review brings a lot of promising findings, but there are a few caveats:
- Most studies lasted 8–12 weeks—so long-term effects are still unknown
- Sample sizes were relatively small (under 60 participants in many cases)
- 80% of the trials studied young men—little is known about its effects on women
- Many studies were conducted in India with common extract suppliers (potential for bias)
That said, no major adverse effects were reported, and it appears to be generally safe, well-tolerated, and inexpensive.
How to take ashwagandha
- Dosage: 300–600 mg of standardized extract per day
- Form: KSM-66 or Sensoril extracts are widely studied and effective
- Timing: Morning is typical to aid cortisol reduction (especially if training that day)
- Duration: Give it at least 8 weeks for effects to manifest clearly
The bottom line
Ashwagandha isn’t creatine. It’s not a steroid or a PED. But it is a reliable support supplement for people who train hard, endure stress, or want an edge.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
By lowering cortisol, modestly raising testosterone, and improving recovery, it fits into a smart long-term training and recovery plan.
Just don’t expect it to replace good programming, consistent effort, or sleep. Think of it as a life enhancer, not a magic bullet.
Bottom line? Stay consistent. Stay chill. And let ashwagandha help you recover, breathe deeper, and maybe even lift a little heavier.
