Nadal is hoping to beat rivals Roger Federer and Novak Djokovic to the first Grand Slam of the season.
And he has been working tirelessly on a brand new dangerous weapon which he hopes will give him he edge.
The Spaniard has only just returned to full fitness after a string of injuries which brought his 2018 season to a premature end.
But now Nadal is raring to go after improving the speed of his serve following the initial bounce.
“You need to make you feel alive, you know,” Nadal said.
“There is always things to improve. It’s true that I try to improve during all my career all the things.
“The serve was always a thing that I tried to improve, and I think I did.
“Maybe it was the time to try to make one more step, no? That’s what we are trying.
“I happy with it. I am happy with the motivation to do something new.
“I am happy with the fact that, if I am able to make that happen in a good way, that hopefully will give me the chance to help me on my game in the longer term. That’s all.
“I didn’t compete with this new serve, so let’s see how it works. I am confident it’s going to work well.”
World No 1 Djokovic is the favourite to take home the Australian Open title but defending champion Federer is also in also a hot tip.
However, Nadal’s coach Carlos Moya believes his star could be a force to be reckoned with in Melbourne.
“We’re looking to maximise damage from the onset, and one way to do that is with a faster, more aggressive serve,” Moya told the ATP website.
“We’ve been working out the mechanics of his serve; his motion now is more fluid.
“Before, the ball he served lost power immediately after bouncing.
“That isn’t the case anymore; his serve maintains speed now after making contact with the court, making it that much more potent.”