Caffeine also leads to headaches , jitteriness , agitation , stomach problems and abnormal breathing .
咖啡因还可引起头痛、神经质、焦虑、胃部不适和呼吸异常。
The downside to a lot of caffeine is insomnia , jitteriness , and stomach problems . Good for the brain . Not so good for the body .
大量咖啡因的负面影响是失眠、神经过敏和胃部不适，对大脑好，但对身体不好。
Ms tillyard 's interest , however , lies not so much with the big upsets of george 's long reign-the endless whig infighting , economic jitteriness and , of course , the loss of america-but with a parallel set of dramas within the king 's own family .
The lack of agreement on rules of economic behaviour was a function of , in part , the lack of international organizations ; and of pervasive security jitteriness in the relations between european states , itself a reflex of the refusal of the us and britain to exercise security leadership .
