It needs the input key once. The key stays in this browser on this device; nothing
on the page works without it.
Prop the phone on its side, a couple of metres off, so it sees you
from the side — shoulders, elbows and hips all in frame. Then start the camera and get
into a plank.
shoulders to hips inside this box · seen from the side
0
–today
Did a set away from the camera, or already filmed one?