Carbon nanotube thread sewn into sports clothing collected ECG and heart rate data that equaled conventional monitoring and outperformed chest-strap monitors.
The shirts are machine washable and made of flexible fibers. If your comfortable shirt can monitor your heart better than uncomfortable smart watches or chest straps, there’s no reason to wear them.

This is the concept of “smart clothing” created by a Rice University lab, which used conductive nanotube thread to weave functionality into everyday clothes. According to the researchers, the fibers are equally as conductive as metal wires, but they are washable, pleasant, and significantly less prone to break while a person is in motion.

SOURCE: Rice University