Hand Walk

1. Start from a standing position.
2. Move your hands to the floor, while keeping your legs extended.
3. Walk forward in small steps with your hands until you can't go any further.
4. Walk forward with your feet towards your hand until you can't go further. Make small steps using only your ankles to move forward.
5. Repeat these movements a number of times.

You can move forward quite a bit further than shown in most videos on YouTube, both with your hands and your feet.