What’s the difference between ‘lean’ and ‘bulk’ muscle — and which should you aim for?

There's a lot of talk about lean muscle compared to bulk muscle, but experts say it's not worth differentiating the two.
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Unibody Vs. Body-On Frame: Which Is Better?

For most mass-market vehicles, there are two methods of construction: unibody and body-on-frame (there are also monocoque vehicles, but they're rarer and don't really apply here). These two distinct ...