Breville, maker of the Juice Fountain Plus featured in the juicing documentary, says its machines generate insignificant heat (about two degrees Fahrenheit), which doesn't diminish nutrients in the juice.

WSJ: Home Juicing Guide: Vitamix, Hurom and Breville All Offer Advantages

It is more likely that cycling combined with the dehydrating effects of a ten-hour plane trip plus a heat wave threw his electrolytes out of balance and triggered an event.

FORBES: Hidden Dehydration Danger

But Thursday night, Popovich and the Spurs stuck it to the NBA and commissioner David Stern by having its three stars, Duncan, Tony Parker and Manu Ginobili, plus starting guard Danny Green sent home to San Antonio to rest, while the remaining Spurs faced off against the Miami Heat in a nationally televised game from Miami.

FORBES: San Antonio Resting Stars Is Good For Spurs, But Bad For NBA