duck [intransitive, transitive] to move your head or body downwards to avoid being hit or seen
He had to duck as he came through the door.
duck (down) (behind/under something) We ducked down behind the wall so they wouldn't see us.
He ducked under the overhanging branches.
He just managed to duck out of sight.
duck something She ducked her head and got into the car.
She ducked under the railings and ran towards him.
bend 1 [intransitive, transitive] to move part of your body so that it is not straight or so that you are not upright
Lee bent and kissed her.
She bent her head.
Bend your knees, but keep your back straight.
Emma bent over to pick up the coins.
I bent down to lift the box off the floor.
bend towards/across etc
He bent towards me and whispered in my ear.
My child often "bends or ducks her head all the way down onto the floor right after meal", which may make her throw up.
She could stand and bend her head all the way down like this
or, She could sit and put her head down on the floor like this
or She could stand and bend her head with her hands on the floor like this
Could I say generally for all similar situations like this
"If you bend / duck your head all the way down onto the floor right after meal like that, you may throw up"?