Pokémon GIF: There is definitely nothing suspicious going on here

As part of its ongoing efforts to promote every single Pokémon out there, The Pokémon Company has shared special content dedicated to Hitmonlee:

Did you know? This amazing Pokémon has an awesome sense of balance. It can kick in succession from any position. The legs freely contract and stretch. The stretchy legs allow it to hit a distant foe with a rising kick.

Source: The Pokémon Company