There would, however, be an immediate shift in momentum as Berdych tensedup in game two of the second set and allowed Federer to break to 15 with a fine crosscourt forehand pass.
Our HAL was energized as soon as we tensed our arm muscles, so lifting up the tray of four 1.5kg water bottles was a piece of cake consistently throughout the demo -- we even managed it with just our pinky (see video above)!