Can Clothing Affect Metabolism and Testosterone? Understanding KODENSHI® Fiber Technology

Ever wonder why your energy isn’t what it used to be, or why your muscle recovery seems to take longer to bounce back after a workout?

While ageing and a hectic lifestyle are often blamed, they may not tell the whole story. As we age, metabolism naturally slows and testosterone levels gradually decline due to poor circulation. Together, these changes may contribute to lower energy, slower recovery, and reduced vitality. Fraile-Martínez et al. (2026) report that testosterone levels decline by approximately 0.5–1.0% annually with age. The study further suggests that this decline is likely driven by multiple interacting factors rather than a single cause.

A New Approach to Everyday Wellness

While ageing is inevitable, people are now investing in wellness apparel as part of a holistic approach to support their everyday wellness. One such innovation is KODENSHI® technology, which is incorporated into wellness apparel such as the AULORA Pants and AULORA Boxers.

Q: How do AULORA Pants with KODENSHI® help reduce fatigue and support my energy levels?

A: AULORA Pants with KODENSHI® Technology have targeted compression points designed to support healthy circulation in the lower legs around the gastrocnemius and soleus muscles, often referred to as the body’s “second heart.” These compression points help activate the second heart, improving flow and supporting the delivery of oxygen and nutrients to the tissues. Improved circulation may help reduce feelings of fatigue and promote overall energy and vitality. 

Q: How does KODENSHI® technology help with muscle recovery after exercise?

A: During exercise, muscles generate heat and experience physical stress from increased activity. KODENSHI® Fiber is designed to reflect body heat back as Far Infrared Rays (FIR), helping to maintain warmth around the muscles. This FIR warmth may help support muscle relaxation and comfort after exercise, while promoting a more conducive environment for recovery. 

Q: How does AULORA Apparel with KODENSHI® Technology help support men’s wellness and hormonal health?

A: AULORA Apparel with KODENSHI® Technology is designed to support healthy circulation and comfort, which are important for overall physiological function. Because hormone production is influenced by many factors, including circulation, stress levels, sleep, and general health, maintaining a healthy body environment may help support the body’s natural hormone balance.

KODENSHI® technology is incorporated into products such as AULORA Pants and AULORA Boxers. Research by Professor Shimizu at Osaka Prefecture University studies the relationship between KODENSHI® Fiber and testosterone levels, with findings showing potential support for maintaining healthy testosterone levels. Participants showed a gradual increase in testosterone levels over the 30-day study period.

Q: Is AULORA Apparel with KODENSHI® Technology comfortable to wear in hot and humid weather?

A: Yes, AULORA Apparel with KODENSHI® Technology is designed with comfort in mind for hot, humid conditions. Made with a soft, stretchable nylon and polyurethane blend, AULORA apparel such as AULORA Pants and AULORA Boxers provides flexibility, a comfortable fit, and freedom of movement for daily wear. The breathable, moisture-managing fabric helps keep you feeling fresh and comfortable throughout the day.

Time to Rethink Your Daily Wear

Optimising your metabolism and testosterone doesn’t always require drastic lifestyle changes. By adapting AULORA Boxer and AULORA Pants into your daily essentials, you can support healthy circulation as part of your wellness routine. Stop leaving health benefits on the table. Make the switch today. 

Disclaimer: Your health is your greatest asset. While we take pride in the quality of AULORA, BElixz, BEYUL, and BEYANG, our information is intended to empower your wellness journey, not replace medical guidance. Our products support general well-being and aren’t intended to treat specific conditions. Please consult a professional to determine how our solutions can best fit your individual needs.

References:

  1. Professor Shimizu’s data and clinical trials are conducted at Osaka Prefecture University
  2. Fraile-Martínez, Óscar et al. “Understanding the Secular Decline in Testosterone: Mechanisms, Consequences, and Clinical Perspectives.” International Journal of Molecular Sciences vol. 27,2 692. 9 Jan. 2026