Formula One champion Lewis Hamilton admitted to being worried that the new double points system for the final race might have seen him miss out on the title.
Hamilton, 29, won his second title in Abu Dhabi after finishing first, seeing off his nearest challenger, Mercedes team-mate Nico Rosberg.
The new double points system was brought in for this season in an attempt to avoid dead rubbers in the final race, much to the driver's discontent.
When asked if he was worried by the new points going into Sunday's Gran Prix, Hamilton said: "Without a doubt. All year long you're trying to grab those seven points for finishing first and those seven points are so small in the end, but double points - the 14 points - are huge. I'm just grateful for the way it ended."
Hamilton avoided drinking alcohol after his win, only having a touch of cognac to toast his victory.
"I feel fresh, I only had one drink on Sunday night, which is more than good enough for me.
"I don't drink champagne. I had a watermelon juice at dinner, which is my favourite.
"Then when I was at the party there was some kind of Cognac thing. I generally drink Cognac, so I poured a little bit in, but it didn't taste very nice, so I had a couple of sips and that was it."