I have an on-again, off-again relationship with exercise. There was a time in my 20s when I worked out consistently. I took a mix of fitness classes, such as boxing, cardio dance, HIIT and even ...

The cardio world has split into two passionate camps that argue with the intensity of people debating pineapple on pizza. On one side, you have the HIIT devotees who swear by short, brutal workouts ...

If you're looking for a style of workout that will push you to your limits without needing to exercise for hours, you only need to understand one four-letter acronym: HIIT. The term stands for high ...