His main characters include G, the strength of gravity, h, Planck's constant, which governs the quantum nature of reality at small scales, e, the charge of the electron, and c, the speed of light itself.
Long a believer in the constant monitoring of players, Klinsmann has instilled a system of regularly testing the team's strength and fitness and proscribing specific training regimens so each player can mitigate his deficiencies.