What It Is
Short, all-out bursts on foot that build speed and power and push your heart rate higher than steady effort can.
How to Do It
Warm up with a few minutes of easy jogging. Run as hard as you can for the time given, driving your arms. Walk until your breathing settles before the next one.
Skill Level
Advanced. Heavy barbell lifts, Olympic-lift variations or all-out sprints. They take precise technique under load.
Type
Cardio. Raises your heart rate to build endurance and heart health.
Engagement
Unilateral (Alternating). Each rep alternates between sides.
