In the 1970s, Mike Mentzer flipped bodybuilding on its head with Heavy Duty Training: one set to failure, maximum intensity, minimal volume. This high-intensity, low-frequency approach—rooted in Arthur Jones’ HIT philosophy—helped Mentzer win Mr. Universe and still has diehard fans today. But in 2025, with science favoring volume, does Heavy Duty still build muscle? Backed by a 2021 Journal of Applied Physiology study, we’ll unpack Mentzer’s method, its merits, and how to use it—especially if
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High-Intensity Weight Training (HIT): A Complete Guide
High-Intensity Training (HIT) is a method of weight training designed to maximize muscle growth and strength through short, intense bouts of exercise. Known for its efficiency and effectiveness, HIT focuses on quality over quantity, aiming to exhaust muscles in a short period with fewer sets and reps than traditional weight training. One of the most famous advocates of HIT was bodybuilder Mike Mentzer, whose approach revolutionized the way people think about training intensity. This blog
Continue readingHigh-Intensity vs. High-Volume Weight Training: Which is Best for You
When it comes to weight training, there are two popular approaches that often come up: high-intensity training (HIT) and high-volume training (HVT). Each has its benefits and challenges, and choosing the right one depends on your fitness goals, body type, and personal preferences. In this post, we’ll break down the differences between high-intensity and high-volume weight training, explore the science behind each, and provide sample workouts for you to try. What is High-Intensity Training
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