Kettlebells are effective weight loss tools.

壶铃是有效的减肥工具。

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I throw heavy stuff around (sandbags, kettlebells, logs).

我投掷重物（沙包，壶铃，圆木）。

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All told, kettlebells helped participants burn about 20 calories a minute, which is equivalent to running a six-minute mile.

FORBES: Shed Those Final 10 Pounds By Labor Day

Robert Flexon, 51, wakes up at 4:30 every morning to exercise with Russian kettlebells, the better, it seems, to deal with the heavy lifting that awaits him.

FORBES: Magazine Article