If you're wondering how to stick with your favorite workout but make it more intense, the "talk test" might be your answer. The talk test is a way to measure relative intensity of an activity, and it ...

Did you know you can customize Google to filter out garbage? Take these steps for better search results, including adding my work at Lifehacker as a preferred source. But you shouldn't need a watch to ...

It feels good to push the body to the point of exhaustion. Leaving the gym or a fitness class soaked with sweat is a deeply satisfying manifestation of the endorphins humming around in your brain.

‘A simple rule of thumb is the talk test. If you can speak in short sentences but not sing comfortably while walking, you’re ...