'Smiles come in all shapes and sizes - some are involuntary, others deliberate, and they're linked to a rich vocabulary of subtle messages,' continued Dr Collett.

'By taking a closer look at how people smile we can gain a much better understanding of what they're feeling, and in some cases what kind of person they are.

'And of course the same principle applies to your own smiles.'

A study of 2,000 people commissioned by Wrigley's Extra White Bubblemint, found that just over half of women think a smile is the most attractive trait in a man that they are meeting for the first time.

Men also place more importance on a woman's smile than her chest, bottom or legs.

However, 67 percent of women and 53 percent of men said that they worry about their smiles.

The survey, released to coincide with the launch of National Smile Month today , revealed that there's nothing better than someone directing a genuine smile straight at us to encourage us to return the favour.

A total of 58 percent of people smile when they receive a compliment, 37 percent when looking at family photos and one in five when they are praised at work.

【2017届高考英语二轮复习阅读理解素材：61】相关文章：

★ 2014高考英语（新人教版）一轮基础训练（14）A、B卷（附答案或解析）

★ 2017届高考英语二轮复习课时训练：9（含解析）

★ 2017届高考英语二轮复习课时训练：10（含解析）

★ 2017届高考英语二轮复习课时训练：12（含解析）

★ 2017届高考英语二轮复习课时训练：21（含解析）

★ 2017届高考英语二轮复习课时训练：13（含解析）

★ 2017届高考英语二轮复习课时训练：19（含解析）

★ 2017届高考英语二轮复习课时训练：5（含解析）

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（6）及答案

★ 2017届高考英语二轮复习课时训练：4（含解析）