News

Leggings are not inherently bad for your health. What they are made of, and what chemical treatments were applied before you bought them, is a different question. Here is what...

The question sounds alarmist. The research behind it does not. Here is what is actually known about the chemicals in yoga pants, what the Lululemon investigation revealed, and what a...

The fiber is not the whole story. By the time activewear reaches you, it has passed through dyeing, finishing, and treatment processes that introduce chemical concerns separate from the base...

Most clothing labels list fiber content. Almost none explain what that content means for your health. This is a practical guide to the fabrics that appear most in activewear and...

Polyester is the most widely produced synthetic fiber in the world and the most studied for microplastic shedding. The research is not ambiguous. Here is what happens when you wear...

Nylon is plastic in fiber form. Every time you wear or wash nylon activewear, it sheds microplastic fibers. Here is what the research says, where those particles go, and what...

Bamboo activewear sounds natural. The manufacturing process tells a different story. Here is what actually happens between the bamboo plant and your leggings, and what to look for instead.

Recycled polyester is marketed as the sustainable activewear choice. On the microplastic shedding question, the research gives a clear answer that the marketing typically avoids.

Recycled polyester is marketed as the sustainable choice in activewear. The safety question is a different question from the sustainability one. Here is an honest answer to both.

Elastane is a synthetic fiber present in almost all activewear. Like other synthetic fibers, it sheds microplastic particles during washing. Here is what the research shows about the scale and...

Spandex is in almost every pair of leggings. The health questions around it deserve a specific answer. Here is what the evidence actually shows, without overclaiming in either direction.

Elastane is in almost every pair of leggings. The health questions around it are worth asking properly. Here is an honest answer based on what the research actually shows.