A Swedish trainer says 3 minutes of this exercise can build muscle, so I tried it (and I'm surprised)

Three minutes of intense exercise may be enough to build muscle, according to a claim made by Swedish neuroscientist Anders Hansen. An Instagram post citing Hansen's research suggests that isometric muscle contractions performed under maximum tension for just three minutes can trigger protein synthesis four times more effectively than traditional strength training.

Intrigued by this claim, I decided to put it to the test by trying a three-minute isometric workout involving three simple exercises: a wall sit, a plank, and a doorway press. Each exercise was held for 60 seconds, with the goal of creating as much muscular tension as possible by bracing and squeezing throughout the hold. In my experience, the first 20 seconds of each exercise were relatively easy, but by the 30-second mark, I started to feel the burn, particularly in my quads and abs.

As the minutes passed, my muscles continued to work hard, and I noticed that actively engaging every muscle possible made the exercises feel much more intense than simply holding the positions. While the idea of building muscle with just three minutes of static holds is certainly appealing, it's important to note that isometric training should not replace traditional strength training altogether.

Strength gains from isometric exercises can be specific to the joint angle being trained, and progressive overload is necessary for continued muscle growth. However, isometric training can be a useful addition to a well-rounded workout routine, particularly for rehabilitating injuries or improving body position and form during other exercises like pull-ups and push-ups.

Overall, while the idea of a three-minute muscle-building workout may seem too good to be true, the science behind isometric training suggests that it can indeed be an effective way to stimulate muscle growth in a short amount of time.