As each second goes by, the intensity ticks up for Leo Manzano.
Manzano is on the fast track to another Olympic Games. He'll be competing in the 1500 meters at the USA Olympic Trials next week, needing to finish in the top three to make Team USA.
"My maturity level has stepped up a couple of notches from previous years," Manzano said.
When Manzano made the 2008 Olympic team, he was straight out of college and in a sense just happy to be there. Four year's later, he's more experienced and better prepared and wants more than just a place on Team USA.
"Definitely in 2008 I was just really happy and excited," Manzano said. "I was one of the younger guys to be there. Four years later, I'm 27 going to be 28. I look at it like, I'd like to take more away from it."
Manzano made the last two US World Championship teams in 2009 and 2011. Despite that success, it's different in an Olympic year.
"In a way, it is really exciting that it's every 4 years," Manzano said. "It is a little bit annoying, I've been here the last four years. All of a sudden everyone's like, 'it's an Olympic year, where's Leo at?' I've been here. Been doing the work."
And that's exactly what it is now. Work. Hours of training with his Austin Track Club. Week after week. The ultimate reward: a trip to London this July.
"This is one of the best jobs in the world. I love my job," Manzano said.