The Science Inside KYMIRA® Warm-Up & Recovery Sweatpants

What it is
KYMIRA’s patented KYnergy® infrared textile embeds a matrix of bioceramic minerals into every fibre. These minerals capture body heat and convert it into far‑infrared (FIR) light in the ~6–14 µm band—wavelengths reported in peer‑reviewed research to penetrate tissue and stimulate beneficial biological responses that support circulation, tissue oxygenation, cellular energy (ATP) production, and recovery.

How it works — step by step

1. Energy conversion
Body heat → absorbed by the bioceramic matrix → re‑emitted as FIR (6–14 µm) to the skin and underlying tissue.
2. Nitric oxide (NO) availability → vasodilation
FIR exposure is associated with increased NO signalling, promoting local vasodilation and improved micro‑circulation, an important precursor for recovery.
3. Enhanced oxygen delivery (tcPO₂)
Independent, placebo‑controlled human trials show FIR garments increase transcutaneous oxygen (tcPO₂) by ~5–8% within 30–90 minutes versus control, supporting oxygen‑dependent repair processes.
4. Mitochondrial & angiogenic signalling (ATP support)
Exercise and recovery studies report up‑regulation of mitochondrial and angiogenic signalling with FIR garments—mechanisms tied to ATP production, vascular adaptation and long‑term tissue support.
5. Lower physiological cost in steady work
Sport physiology research has observed reduced oxygen cost (VO₂) at submaximal intensities when wearing FIR apparel, indicating greater efficiency at a given pace—useful in back‑to‑back sessions and blocks.
6. Thermal comfort & moisture management
The fabric’s knit structure balances breathability and thermoregulation, helping stabilise micro‑temperature during cool‑downs and travel, while wicking moisture away from the skin.


Why it matters for recovery

- Faster post exertion neuromuscular restoration & readiness
Peer‑reviewed athlete research shows that recovering in KYMIRA FIR garments can deliver highly significant neuromuscular recovery improvements at 24–48 h, compared to placebo. Objective markers of readiness to perform again after the prior session, show next athletic performance is significantly better following recovery in KYMIRA Infrared. Wearers are in a better biological state and have reduced physiological stress in objective measures.

- Reduced feelings of DOMS, soreness and inflammation.
Peer-reviewed research shows using KYMIRA Infrared significantly reduces athletes experiences of DOMS, and modulates pain relief and anti-inflammatory pathways, actively reducing both, with natural effects.
Passive, non‑powered recovery you can wear immediately after training, during travel, and overnight—no settings, no sessions to book—drives consistent use and better outcomes.

- Increased Circulation, Oxygenation & Quicker soft-tissue Repair
The observed tcPO₂ rise within 30–90 min aligns with the post‑session window when tissues need oxygen for remodelling and waste clearance, supporting reduced next‑day heaviness and smoother movement quality. This acceleration of recovery processes, continues as long sa your wear KYMIRA.

- Acute Skeletal Muscle Adaptive Responses During Recovery
Clinical studies show significantly increased mitochondrial and angiogenic signalling showing increased angiogenesis, neuromuscular training adaption results.

Why it matters for performance

- Increased Power, Strength & Endurance Capacity
Improved oxygen delivery, faster aerobic system activation, and more efficient ATP energy production, combined with reduced oxygen consumption requirements, support higher sustained intensities and greater total work output, increased average power, stronger muscles, better neuromuscular efficiency, increased explosive power, coordination. In clinical trials by the University of Loughborough, wearing KYMIRA Infrared has been shown to improve athletic performance by up to 8.7% from first wear.

- Better Movement Quality & Soft Tissue Readiness
Enhanced local circulation and oxygenation help prime muscles to be stronger and more flexible, improving mobility, reducing stiffness, and supporting more consistent movement patterns during sessions. Clinical trials show users have better control and stability during high-speed movements, alongside increased jump height and grip strength.
Greater acute skeletal muscle adaptive responses during exercise, with increased mitochondrial and angiogenic signalling. Leading to quicker training adaptions biologically.

- Rapid in-session recovery: The same mechanisms support repair — removing waste products like lactic acid quicker, reducing muscle micro-tears that create DOMS, reducing in-session fatiguing and inflammation marker metabolites, and activating the pain and inflammation modulating pathways, reducing feelings of soreness.

Why KYMIRA Supports Injury Prevention
- Enhanced local circulation and oxygenation help prime muscles to be stronger and more flexible, improving mobility, reducing stiffness, and supporting more consistent movement patterns during sessions. Clinical trials show users have better control and stability during high-speed movements. This prevents the creation of micro muscle tears that contribute to DOMS, and to larger soft-tissue injuries.
- Improved oxygenation supports efficient muscular contraction and reduces fatigue related injury risk.
- Cellular energy support (enhanced energy ATP production), reduced aerobic pathway and oxygen use, greater endurance and reductions in fatiguing metabolites in session, supports stable movement patterns and reduces compensatory mechanics from tiredness.
- Temperature regulation helps prevent cold related tightness and maintains muscle compliance.
- Accelerated recovery mechanisms, reductions in fatiguing metabolites, and reductions in inflammatory markers during and between sessions, reduce cumulative tissue stress experienced in session.
Increased angiogenic signalling and mitochondrial angiogenesis support quicker training adaptions for safer movements.


Learn more in our Science area

The size charts below detail the relevant sizing or points of measurement for all of our products. Our garments do not need to be tight and against the skin for our infrared technology to work, so we suggest fitting to your personal preference. If you are looking for a looser fit, then size up from the guide's suggestions.

Men’s Sizes

Top (Chest)

XS 34" - 38"
S 36” - 38″
M 38″ - 40”
L 40″ - 42”
XL 42“ - 44”
XXL 46″ - 48”

Full sizing chart available in our website footer.

FABRIC COMPOSITION
47% CELLIANT
35% Cotton
12% Polyester
6% Elastane

CARE INSTRUCTIONS
Wash at 30C/86F
Do not tumble dry