High Intensity Interval Training (HIIT) and CrossFit

What is All of the Buzz Surrounding High Intensity Interval Training (HIIT) and CrossFit?

High Intensity Interval Training (HIIT) and CrossFit are becoming increasingly popular in fitness all across the country. What  is it about these two fitness paradigms that has everyone buzzing? The easy answer: you can maximize the number of calories you burn in the shortest...