I get the other two, but how does moving your finger from tab to the key right above it qualify as "moving your hands around"? I hit tab with my middle finger,

I get the other two, but how does moving your finger from tab to the key right above it qualify as "moving your hands around"? I hit tab with my middle finger, which reaches ~ quite naturally. I'm really happy to find out about this, it works on macOS, so I'm going to be using it!