Description
After a warm-up the runner will run a speed interval followed by a recovery of equal length. The length of an interval will vary in length 30 second to 3:30 minutes.
Fartlek Yourself
• generates a workout based on the length you select.
• randomizes intervals making each workout unique
• provides audio instructions that walk you through the workout
• has adjustable levels of hints and motivation.
• includes a warm-up and cool-down
• can be controlled from Apple Watch (not required)