Train Harder. Recover Smarter. Perform Better.
PhyterBerry SPORT delivers high-dose polyphenols from aronia; nature's most powerful berry, to support serious performance and faster recovery.
Polyphenol Performance in Action
Discover how high-dose polyphenols from aronia deliver real performance advantages across recovery, endurance, and more.
Polyphenols combat oxidative stress, so your muscles repair faster and you can train again sooner.
Polyphenols support better circulation and oxygen delivery, helping you push harder for longer.
Polyphenols activate your body's stress-response pathways, amplifying gains from every session.
Polyphenols help control inflammation, protecting your body from wear, tear, and overuse injuries.
How Polyphenols Turn Stress Into Strength
Strenuous training challenges your body; polyphenols help you turn that challenge into gains, so you can go further, for longer. Here's how it works:
How Polyphenols Work To Support Athletic Performance
Most performance supplements are built on stacks of synthetic ingredients. PhyterBerry takes a simpler, science-backed approach. Using a single plant compound that supports recovery, adaptation and energy. Behind every benefit is a mechanism. Here's how polyphenols perform, to help your body perform at its best.
Intense training floods your system with free radicals that damage muscle cells and slow repair. Polyphenols act as powerful antioxidants, neutralising this oxidative stress to reduce cellular damage and speed up recovery between sessions.
During intense workouts, your muscles generate a surge of reactive oxygen species; unstable molecules that can damage proteins, membranes, and DNA. Your body naturally produces antioxidant enzymes and antioxidant molecules like glutathione (GSH, a key antioxidant molecule regenerated by enzymes such as glutathione reductase). Together, these systems defend against oxidative stress, but intense training can overwhelm them. Cellular defence refers to these built-in systems that help repair and protect tissues from this oxidative stress. Supporting these systems is key to faster, more efficient recovery.
Polyphenols act directly by neutralising free radicals, but more importantly they activate Nrf2, which upregulates internal defences like antioxidant enzymes such as Super Oxide Dismutase (SOD) and glutathione reductase, which recycles oxidised (non-active) glutathione back to its reduced (active) form. This response helps repair cells and maintain the balance between free radicals and antioxidant defences, speeding recovery.
With this dual action of lowering oxidative stress and preserving antioxidants like glutathione in their active form, polyphenols help preserve a favourable redox balance, keeping antioxidants in their reduced, active state. This not only reduces damage, it supports signalling pathways that regulate recovery and adaptation. It means less soreness, quicker bounce-back, and improved benefits from training.
Endurance depends on oxygen delivery. Polyphenols improve blood vessel function and circulation, helping transport oxygen more efficiently to muscles. This supports higher VO₂ max, enhanced aerobic output, and longer sustained effort.
VO₂ max is a key performance marker; it reflects how well your heart, lungs, and blood vessels can deliver oxygen to working muscles. Improving it, boosts stamina, endurance and training capacity. This depends heavily on blood flow and vascular health. Without efficient circulation, your performance plateaus.
Polyphenols promote nitric oxide (NO) production, a molecule that relaxes blood vessels and improves vascular flexibility. They also reduce oxidative stress in the endothelium (the vessel lining), protecting nitric oxide (NO) from oxidative degradation and prolonging its bioavailability in the bloodstream. The result is improved blood flow and oxygen delivery to muscles (and over the longer term lower blood pressure).
Studies show that polyphenols like those in aronia, can measurably improve VO₂ max and oxygen efficiency over time. The result: better oxygen delivery and more aerobic power.
Your body adapts by responding to stress; that's the essence of training. Polyphenols activate hormetic signalling pathways such as NRF2 and AMPK that enhance the body's natural ability to rebuild stronger, increasing your gains and improving resilience over time.
Hormesis describes the body's ability to adapt and grow stronger in response to mild stress. This principle explains why progressive overload in training works; repeated controlled stress triggers adaptation to strengthen biological systems.
Training only triggers this effect if your body is supported to respond effectively to stress. Hormetic activation includes pathways that build resilience, improve mitochondrial function, and regulate recovery. Think of it as your body learning to recover smarter.
Most people think antioxidants are only about “mopping up” free radicals. But reactive oxygen species (ROS) are not only damaging, they are also important signalling molecules in their own right. Performance depends not on eliminatingfree radicals, but on maintaining redox balance; the correct ratio of oxidised and reduced molecules. This balance is essential for health, recovery and adaptation.
Polyphenols don’t oversupply antioxidants; they help shift the redox balance by lowering oxidative stress and preserving key antioxidants like glutathione in their active form.
Unlike blunt anti-inflammatories, they don't just block stress, they enhance your body's response to it. They activate stress-adaptive systems like NRF2 and AMPK, which drive cellular repair, mitochondrial growth, and metabolic efficiency. This leads to faster adaptation to training loads and long-term performance gains.
Every workout causes some inflammation; it's part of the process. But when it becomes excessive or lingers, it puts you at risk. Polyphenols help regulate the inflammatory response, keeping it in balance so your body heals without getting stuck in a cycle of strain and micro-injury.
Inflammation is your body's response to physical stress; it kicks off healing. But if inflammation persists, or becomes excessive after frequent sessions, it can slow recovery and increase the risk of tendon and joint strain. Chronic low-grade inflammation also impairs muscle function and performance. Athletes need inflammation to resolve quickly and cleanly.
Polyphenols have been shown to downregulate pro-inflammatory cytokines and promote anti-inflammatory signalling. They act as modulators, helping the body resolve inflammation efficiently without shutting it down completely. This keeps the recovery window optimal and protects against micro-injuries becoming chronic. Over time, this builds a body more resilient to impact and strain. They promote resolution of inflammation, which is essential for tissue remodelling, unlike anti-inflammatories that simply block the process.
Want a deeper dive into how polyphenols support athletic performance?
How to Take PhyterBerry Aronia for Sport
Consistency matters. Take PhyterBerry daily and time extra doses around your toughest
training sessions and events to power results.
For Every Day Baseline Use:
Take PhyterBerry SPORT every day to maintain a baseline level of polyphenols to support ongoing recovery and resilience. Ideally take once in the morning and once in the evening.
Before Intense Training or Events:
Take an additional dose of PhyterBerry SPORT, 60-90 minutes before high impact training or event participation to help activate blood flow and antioxidant defenses.
After Intense Training or Events:
Take another dose of PhyterBerry SPORT immediately after long or taxing exercise to support recovery, reduce inflammation and promote muscle repair.
Aronia: Nature's Most Powerful Recovery Berry
Whether you're pushing through endurance sets, lifting heavy, or preparing for your next race, intense training stresses your body, increasing free radicals and inflammation that can limit recovery and performance.
That's why we built PhyterBerry SPORT around aronia berries: the richest known source of natural polyphenols even more than blueberries, tart cherries, and açaí and naturally low in sugar. These powerful compounds help neutralise oxidative stress, reduce inflammation, and activate your body's natural defense and recovery systems.
Certified for Confidence: Informed Sport
Every batch of PhyterBerry SPORT powder is tested for banned substances under the Informed Sport programme, trusted by elite athletes worldwide. Products undergo rigorous screening using ISO 17025 accredited methods to ensure they're safe, clean, and competition-ready. (PhyterBerry SPORT capsules are awaiting accreditation).
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Real Athletes. Real Results.
From ultra-endurance to everyday sessions, real athletes are seeing real recovery with polyphenols.
These testimonials reflect individual customer experiences. They describe personal opinions and outcomes, which may differ from person to person. They are not intended as medical advice or to suggest typical results.
