After his first ever world championship performance, Johnny Gregorek is getting back into the swing of things with an endurance workout as he looks ahead to the 2018 track season.
2-mile warm up
3-mile tempo (5:20, 5:16, 5:15)
"You know Coach Gags, that's his big system... his big mantra is you take speed and strength, and you mix them in a bowl, and you get a champion."
Presented by ASICS