Here's the trick when you're standing up: You've got to bend those knees.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event -- Sterling, VA

Bend your knees and duck down, rolling your head in a 'U'shape under the punch from 'inside' to 'out.

BBC: DEFENCE

Help is on the way. (Applause.) Just bend your knees.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event -- Sterling, VA

I'm going to talk for a while. (Laughter.) You guys don't sit down because you don't have chairs. (Laughter.) But you guys all have to bend your knees a little bit so you don't faint.

WHITEHOUSE: The White House

First of all, if you've got a seat feel free to take a seat, because I'm going to talk for a while. (Applause.) Point number two, if you don't have a seat, bend your knees because sometimes people faint a little bit -- all right -- and you've been standing here a while.

WHITEHOUSE: The White House

Though the patches can occur anywhere, they most often appear on the hands and feet, in the front of the bend of the elbow, behind the knees, and on the ankles, wrists, face, neck and upper chest.

CNN: Atopic dermatitis (eczema)