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. Whether you're running or lifting ...

Adults need 150 minutes a week – about 20 minutes per day – of moderate to intense physical activity, according to guidelines from the Department of Health and Human Services. This can take the form ...