A clean bill of health
A statement of good health.

An apple a day keeps the doctor away
Eating healthy can prevent health problems.

Fit as a fiddle
In very good health.

Burning the candle at both ends
Overworking oneself, leading to poor health.

Under the weather
Feeling unwell or sick.

A picture of health
In excellent health.

An ounce of prevention is worth a pound of cure
Taking care of health can prevent bigger problems later.

Healthy as a horse
Very healthy.

Staying healthy
Maintaining good health.

On the mend
Recovering from illness.

In good shape
Physically fit and healthy.

Hit the hay
To go to bed or sleep.

You are what you eat
Good nutrition is essential for good health.

A stitch in time saves nine
Fixing a small problem now can prevent bigger problems later.

Catch someone's eye
To attract attention.

In the pink
In very good health.

Bite the bullet
To face a difficult situation with courage.

Out of sorts
Feeling slightly unwell or unhappy.

Kick the habit
To stop a bad habit, especially related to health.

Take a toll on
To cause harm or damage to someone’s health.