![Flo på Twitter: Flo på Twitter:](https://pbs.twimg.com/media/EBE362gX4AE4pXq.jpg)
Flo på Twitter: "Flexing 💪💪 - 15 Years Old - can you guess the Biceps size? #biceps #bizeps #muscles #15yearold #ripped #muscleguy #boys #teenagers #flexing #FitnessModel #muskeln… https://t.co/3aztIEN8WB"
Why do people at the gym do so many variations of biceps curls in a single workout? Is there any known benefit to dedicating an entire workout to biceps? - Quora
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