Short, fast intervals (called HIIT, or high-intensity interval training) are the way to go if you want to melt fat and target a muffin top. Here are a top trainers tips on how to do HIIT right.

Short, fast intervals (called HIIT, or high-intensity interval training) are the way to go if you want to melt fat and target a muffin top. Here are a top trainers tips on how to do HIIT right.

Original article and pictures take https://popsugar.com site