Classic Pre-Set Workouts
CHAPTER ONE: BASIC OPERATION
Speed Intervals 2
Different from Speed Intervals 1 with the speed changing in varying amounts.
P E R F O R M A N C E S E R I E S O W N E R ’ S G U I D E
17
CHAPTER ONE: BASIC OPERATION
Different from Speed Intervals 1 with the speed changing in varying amounts.
P E R F O R M A N C E S E R I E S O W N E R ’ S G U I D E
17