Question

why are normally advised to take a bland and nourishing food when we are ill or recovering from an illness, accident or operation?

Answer 1

We are advised so because the intake of
nourishing food provides us nutrients
which helps us in fighting against the disease and this also makes our immune system strong.

Answer 2

we are advice because there is no heavy pressure on body so that it can cause more illness.
And when we eat nourishing food , we get more energy and it help in quick recovery....