Dec 19, 2024 · HIIT, or high-intensity interval training, can be an efficient, fun way to tackle your cardio workouts, add muscle, and shred serious fat.

Aug 13, 2025 · What does HIIT actually mean? We break down what high intensity interval training does for your workouts—and how to plan to use them to improve cardio health.

Jan 27, 2023 · HIIT (high intensity interval training) workouts are extremely popular, but they shouldn't be performed every day. Here's how often you should do HIIT.

Feb 10, 2021 · Beginner HIIT workouts are ideal for everyone. Here are the best to try, plus expert advice from top PTs

Apr 8, 2020 · Trainer Charlee Atkins shares a 30-minute at-home HIIT workout designed to be as efficient as possible so you can work up a sweat without wasting your time.

Jul 14, 2020 · This 30-minute bodyweight HIIT routine gets you up and moving—just make sure to pay attention for the interruptors that make the session more challenging.

Oct 1, 2025 · Learn more about VO2 max workouts, including what this metric means, the types of training that improve it, plus sessions to add to your schedule for a boost.

Feb 20, 2025 · Our newest training program delivers four 20-minute-or-less workouts that leverage the science-backed high-intensity interval training protocol to torch calories and build …

May 3, 2020 · You'll work 40-on, 20-off intervals throughout this workout, and you'll pair a conditioning move with a core move. First, do 40 seconds of Move A, then rest 20 seconds.

Jul 24, 2024 · Trainer Korey Rowe demonstrates a HIIT-style workout focused on building core muscle as part of the new Summer Shred workout program.