Ever felt like when you see someone yawning? I know I have felt that way. Whenever I see someone yawning the sensation to yawn builds up in me.So what is this phenomena behind these issues? It’s called “contagious yawning”
We were clearly in empathy and I notice he was mirroring my body language!
When we see another person yanwin this is" a trigger in socal terms"
Its a kind of 'empathy signal' that shows we are one of the group or feel the
same as the person we copy...(monkey see... monkey do"-))
It is known as "MIRRORING" human behaviour.
他の人があくびをしているのを見るとそれは
"a trigger in socal terms"
（社会の通念を引き起こします）
これは一種の'empathy signal'（共感メッセージ）で私たちは一つのグループでみんな同じ気持ちになってマネしていく…
(monkey see... monkey do"-))
（サルは人の真似をする/猿真似）
これは人の"MIRRORING"（鏡映）行動でしょう。
(1) Yawns are contagious.
(2) When you yawn, I can't help but yawn as well.
Both of these expressions can be used to say that you are yawning or yawned at the same time as someone else.
(1) Yawns are contagious.
（あくびは伝染する）
(2) When you yawn, I can't help but yawn as well.
（あなたがあくびすると、私もあくび出ちゃう）
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どちらも、誰かと同時にあくびをした（している）と伝える時に使えます。
Contagious means an emotion, feeling, or attitude that is likely to spread to and affect others. For example you can say ""her enthusiasm is contagious"" This means you also started to feel enthusiastic.
Contagiousは感情や感覚、または態度などが広がって他人に影響を与えそうであるということを意味します。
例えば、以下のように言えます。
""her enthusiasm is contagious""
彼女の熱意は伝染する。これはあなたもまた、熱意を感じ初めていることを意味しています。
日本 
南アフリカ 
イギリス 
アメリカ合衆国 
