7 Easiest, Fastest Muscle to Build

2. Latissimus Dorsi

Latissimus Dorsi has a pet name, of course: lat. Lat is one of the widest muscles in your body, and it’s at your back, spreading down your spine. Pull-ups, chin-ups, lat pulldowns, and swimming are groups of exercises that make it even more active. It responds best to a medium number of repetitions because it has a mixture of fast and slow twitch muscles.

Easiest, Fastest Muscle to Build

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