Small duffel bags with handles can be filled with books and used for lower body exercises like squats, lunges and deadlifts.
有手柄的小行李袋可以装满书并用来做下肢锻炼，如下蹲、弓步和提举。
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Some great compound exercises include squats, deadlifts, good mornings, lunges, pushups, bench presses, military presses, rows, pullups, dips, and more.