“Your control looks fine, so here's the next practice technique. Take your glass and wrap it all around your body. Keep it ready to move the same way you do when you're going to reshape something. Then just move around like you normally would, and keep the glass with you — don't let it stop you from moving or come away. This will be tricky to get right, but I promise it's the last thing I'm gonna just tell you to do.”

He demonstrates on himself, walking around while the glass covers his body like an extra layer of clothes. His head is still exposed, and the glass has gaps and arrays of holes in it in various places, which experience will quickly show are needed to reduce the feeling of being in a personalized greenhouse while exercising.