You can also gain more weight for other reasons such as increased muscle, but you would need to be doing progressive, heavy resistance training and eating more calories over time.

你也可以因其他原因获得更多的重量，如增加肌肉，但是你得积极一些，沉重的训练及多吃。

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Heavy weights and low repetitions are considered best to build muscle.

练肌肉最好是大重量和少重复。

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The core muscle that does most of the heavy lifting here is iliopsoas, which is composed of two deep hip flexors.

核心肌群中负责此项工作的是髂腰肌。

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One routine targets all muscle groups by lifting heavy weights through movements like squats, bench presses, bicep curls, tricep extensions, calf lifts and lateral pull-downs.

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Think of a concentric muscle movement as lifting a heavy object overhead.

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Light on muscle, maybe, but heavy on intelligence.

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