Hit it far like Rory

[DJofSD]

http://instagram.com/p/s4x8X5L2PW/

Fast twitch muscles: this is how Rory develops a hip peak rotation speed of 500 degrees per second.

[Greyfox]

Fast twitch muslces pumped up by what?

Visually he appears to have gained some suspicious "tiger like" muscles.

[DJofSD]

Fast twitch muslces pumped up by what?

Visually he appears to have gained some suspicious "tiger like" muscles.
Mainly by sprinting.