Vince Gironda built some of the best physiques of the golden era, and the 10-8-6-15 system is one of his classic muscle-and-definition methods. Every exercise runs the same four-set wave: a lighter primer, two heavier sets, then a high-rep burnout.
The scheme is named after the reps. Set 1 is 10 reps at 50% of your 6-rep max, Set 2 is 8 reps at 75%, Set 3 is 6 reps at your full 6RM, and Set 4 is 15 reps at 35%. Slow, strict tempo and short rest do the rest.
We built a calculator so you enter your 6-rep max for each exercise once and all four working sets fill in for you.
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