The 6-12-25 Shock Method

Slater Coe • June 18, 2026

The 6-12-25 Shock Method

"The 6-12-25 Shock Method"


A method popularized by strength coach Charles Poliquin combines three rep ranges performed back-to-back:


• 6 reps (heavier load)

• 12 reps (moderate load)

• 25 reps (lighter load)


Each rep range creates a different training stimulus.


We're utilizing this method in our group classes during our Summer programming cycle. The set of 6 emphasizes mechanical tension and force production. In simple terms, it's where a lot of your strength gains come from. The set of 12 increases time under tension and tends to be effective for building muscle size. The set of 25 challenges muscular endurance and your ability to continue producing force as fatigue accumulates.


What's interesting is that this type of training can also reveal weaknesses that traditional straight sets often hide.


If the set of 6 feels disproportionately difficult, absolute strength may be your limiting factor. If the set of 12 is the hardest, you may need more muscle mass or a better ability to sustain tension under load. If the set of 25 completely falls apart, muscular endurance is probably the bigger opportunity.


That's one reason I like methods like this. They're not just training tools. They're diagnostic tools.


Sometimes the most valuable thing a training session tells you isn't how hard you worked. It's what quality needs the most attention next. The better we understand our weaknesses, the more precisely we can improve them.

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