Two daredevils on treadmill

Swati and Agastya reminds me of Calvin and Hobbes as their adventures together are nothing less. As if jumping on bed, walking on sofa trims holding the walls were not enough - they both devised a new play. Swati manually pushes the running belt of the treadmill whereas Agastya stands in front holding onto the rails and running at the same time. They both together have a blast. I stand there - admiringly at their new game and panicking at the same time that they will fall and hurt themselves.