A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.

ChatGPT Pulse will send you personalized updates each day. The updates are based on your chat history, memories, and feedback. Pulse is now limited to ChatGPT Pro users, but it will expand to Plus ...

When these tiny blood vessel pulses become excessive, they may interfere with the brain’s “glymphatic system,” a recently ...