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It means that apples are so nutritious they keep you in the peak of health.

Beauty is in the eye of the beholder.

What is beautiful to one person may not be beautiful to others.

Beggars can't be choosers.

Someone in need should be grateful for what is given to him – even if it's not what he wants or expects.

The blind leading the blind.

A person helping or advising someone knows as little about the subject as the person who is being advised.

Burn the candle at both ends.

Those who are always busy and seem to get little rest.

Buy a pig in a poke.

Buy something without examining it for faults or checking to see if they are really getting what they believe they have purchased.

Children should be seen and not heard.

To stop a child from asking questions, talking, or making unnecessary noise.

Christmas comes but once each year.

It is used as an excuse to indulge in food and drink and spend money during the Christmas season.

(Don't) Cry over spilled (spilt) milk.

It's pointless to get upset or feel regret about a loss or mistake that can't be undone.

Curiosity killed the cat.

To warn people not to show too much interest in affairs that don't concern them.

Cut off your nose to spite your face.

When people are dissatisfied or angry, they sometimes react by doing foolish things that prove harmful to themselves.

The devil finds work for idle hands.

Unless one keeps busy doing useful or constructive things he could be tempted into mischief or evil.

Fling/throw mud at someone.

To say evil or bad things about someone and in doing so, to damage his or her reputation.

A fool and his money are soon parted.

A person who spends his money foolishly will soon be penniless

Give someone enough rope and he will hang himself.

If we allow someone to continue in his bad ways he'll eventually bring about his own downfall or ruin.

Grin and bear it.

To put up with discomfort or a bad situation without complaining.

He who pays the piper calls the tune.

The person who pays for something has the right to do as he wants.

Hide your light under a bushel.

Concealing your talents, skills or abilities.

Home is where the heart is.

No matter where you are, 'home' is where you feel most comfortable and content.

If wishes were horses, beggars would ride.

If we could get all the things we wanted just by making a wish, everyone would have all he ever wanted.

If you can't lick them, join them.

If you cannot defeat an opponent or get him to change his ideas, plans or way of doing things, the best thing is to change your ideas, plans, etc.

In for a penny, in for a pound.

If we decide to do something, we should commit ourselves to it boldly and completely.

A job worth doing is a job worth doing well.

When you do something you should do it as well as you can.

Laugh and the world laughs with you.

When someone is in a happy, cheerful mood, people like being with him.

Least said, soonest forgotten.

The less we say about it the sooner the incident will be forgotten.

You can lead a horse to water but you can't make him drink.