It helps to keep a daily activity journal or you could even wear a heart rate monitor that calculates calories burned.

它有助于保持日常活动日志或你甚至可以穿心率监测器，计算消耗的热量。

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A new study published in the Journal of the American Medical Association has found that the radio frequency waves emitted from mobile phones demonstrably alter brain wave activity.

在美国医学学会期刊上发表的一项最新研究发现手机发射的无线电波能明显地改变脑细胞活动。

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This study, published in the journal Translational Psychiatry, is the first to connect frequent video gaming with differences in both brain structure and activity.

这项研究发表在《转化精神病学》杂志上，也是第一次将频繁地打电动游戏与大脑结构和行为活动之间的差异联系起来。

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But an exhaustive new study by the medical journal Lancet measuring global physical activity explodes the "myth" about the unfit Indian.

BBC: The myth of the physically unfit Indian

In fact, occupational sitting time is where the epidemiology of physical activity first began, writes one researcher in the British Journal of Sports Medicine.

CNN: Sitting for hours can shave years off life

In a study published earlier this month in the International Journal of Psychophysiology, he and his colleagues monitored the brain activity of 79 female and 70 male students while they performed a letter-identifying exercise.

WSJ: Anxiety Can Bring Out the Best