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You follow the rules: you eat your greens, you skip the junk. So why is that waistband a little snugger than you'd like? It may not be what's on your plate, but how much. 你还在遵循着这些不二规则：吃绿色食物，杜绝垃圾食品。那为什么腰带还是那么紧呢？可能不是你吃什么的问题，而是吃多少的问题。 For when it comes to portion size, it seems we've lost all sense of, well, proportion.'Most people don't know what an appropriate portion should look like,' says Sian Porter, a consultant dietitian and spokesperson for the British Dietetic Association. 因为一谈到食物比例的问题，我们可能就没什么概念了。英国饮食健康协会营养咨询师兼发言人西恩·波特称：“大多数人都不知道合适的比例是多少。” 'But even healthy food contains calories. You can make really healthy choices and still eat too much.' “但是即使健康食物也含卡路里。你也可以在吃得很多的同时吃得健康。” Good Health has the answer at hand - literally. 实际上，健康的答案全在手上。 'The obvious advantage of using your hands is that you always have them with you,' says Sian Porter. 西恩·波特说：“用手来计算食物摄入量一个明显的好处就是你的双手一直都跟着你。” MEAT: PALM OF THE HAND 红肉类：手掌大小 | 
