Hiring a personal trainer will give you a different style of workout, giving you a new routine that your brain and body will have to quickly adapt to, shocking it into a concentrated state of action.

雇佣一个私人教练会给你一种不同的训练方式，给你一种你的大脑和身体必须尽快适应的新的训练节奏，并使你的身体进入一种专注的训练状态。

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If you have access, try getting your body composition measured, either through a DEXA scan at your doctor's office, or by using body fat calipers by an experienced trainer at your gym.

如果有机会，尝试一下身体成分测试，要么在医生的办公室用扫描仪，要么在健身房让有经验的教练给你用脂肪卡钳。

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"It doesn't mean anything," said Mark Macdonald, personal trainer and author of "Body Confidence" about the calorie Numbers spit out by the cardio machine.

“这根本毫无意义，”Mark Macdonald在提到有氧运动机吐出的数字时说道。他是一名私人教练，而且是《身体信心》(“ Body Confidence ”)一书的作者。

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Gravity takes over when you perform most exercises, like a dumbbell curl or a kettle bell swing, giving the body a chance to relax, says Rowdy Yates, a certified personal trainer and fitness manager at Crunch gym in New York City.

WSJ: What's Your Workout: From a Ball and Basket to a Stick and Some Ice

One trainer and nutritionist interviewed said black women he works with often have a higher body mass index than white women but have different goals.

FORBES: Are Black Women Heavier But Happier Than White Women?