Track and field workouts are often used by professional fighters due to the perceived explosiveness benefits they give in a fight.
The fast twitch moving muscles are not only worked on during things like regular and indeed hill sprints, but the aerobic exercise for the heart is second to none and can simulate that almost 0 to 90 miles per hour feeling the heart can go through during the relentless and unpredictable ups and downs of a fight.
Gervonta Davis takes on Abner Mares next month in his first fight of the year and has posted the following footage of his hill sprints which seems to have gotten quite a bit of engagement:
Davis is currently undefeated at this time and is promoted by Mayweather Promotions.