Food enters the digestive system as soon as you put it in your mouth. This is where food is broken down by your teeth, mixed with saliva and swallowed. This is one of the best teams in the world!

The reason you open your mouth when applying mascara is due to the proximity of the nerves that control the muscles of the ...

All smiling involves contraction of the zygomatic major muscles, which lifts the corners of the mouth. But a Duchenne smile is characterised by the additional contraction of the orbicularis oculi ...