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体型偏瘦的人想练结实,一方面锻炼方法要得当,另一方面必须要有恒心。专家建议最初的阶段可以请教一下专业的健身教练,以便
Physically slim people want to practice strong, on the one hand exercise methods should be properly, on the other hand there must be perseverance. Experts suggest that the initial stage can consult a professional fitness trainer, so