Question

Why should over cooking and over washing of food be avoided

Answer 1

HEY DEAR....
HERE'S YOUR ANSWER⬇
We should avoid overcooking and over washing of food because it will lead to a reduction in the amount of vitamins and minerals.
Any doubts, please ask me in the comments.
I HOPE YOU FIND IT HELPFUL.
@ LB :)

Answer 2

food should not be over ashed because the the nutrients present in it will be washed away and moreover its many natural taste will not come.
food should not be overcooked because it destroys the nutrients and overcooking means addition of excess oil which is harmful for our body.