Gresini Racing's Alex Marquez led from the start to comfortably win the 13-lap Valencia Grand Prix sprint on Saturday, leaving runner-up Pedro Acosta behind by more than one second.
Begin with a 10- to 15-minute warmup jog. Complete 6-8 sprints (3-4 x 45 seconds and 3-4 x 30 seconds) up an incline–the steeper, the more difficult. Lightly jog or briskly walk down the hill, ...