High-intensity resistance training (HIRT) is a gentler form of high-intensity interval training. HIRT adds strength training to high-intensity training, while HIIT typically involves mostly cardio exercises that raise your heart rate with a few strength training exercises mixed in.
HIRT workouts typically consist of high-intensity resistance exercises designed to build and strengthen muscle. It’s become more popular in recent years, but it’s been around for over five decades. HIRT is typically recommended for people who have some experience with strength training. Before making high-intensity resistance training part of your workout routine, you should understand how most of the basic strength training exercises are performed.