This bodybuilding technique, popularized by Arnold Schwarzenegger, involves one of the biggest myths in the gym. 💪 Doing 21s for biceps curls, hits the biceps through the full range by emphasizing the bottom, middle, and top range with 7 partial reps in each range, but unfortunately this accumulates a lot of junk volume and unnecessary fatigue as the resistance is hardest in the mid range. 🏋️‍♂️💪 Instead, opt for a more effective approach: choose 3 different exercises emphasizing different en

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