What are some effective dynamic warm-up exercises before HIIT?

Dynamic warm-ups are preferred over static stretching before high-intensity interval training (HIIT) because they raise core body temperature, activate the central nervous system, and improve joint range of motion without sapping muscle power. An effective HIIT warm-up typically lasts 10–15 minutes and progresses from slow, full-body movements to faster, workout-specific drills. 

1. Mobility & Joint Activation (2–3 Minutes) 

These exercises focus on loosening the hips, shoulders, and spine. 

  • World’s Greatest Stretch: Step into a deep lunge, place the opposite hand on the floor, and rotate your torso toward your front leg, reaching your arm to the sky.
  • Inchworm to Plank: Hinge at the hips, walk your hands out to a high plank, pause, and walk back.
  • Hip Circles: Stand on one leg and rotate the other knee in large circles (8 reps in each direction) to open the hip joint.
  • Arm Circles & Cross-Body Swings: Gradually increase the size of circles to prime the shoulders for explosive upper-body movements. 

2. Muscle Activation (2–3 Minutes) 

Focus on engaging the glutes, core, and stabilizing muscles. 

  • Glute Bridges: Lie on your back and lift your hips to activate the posterior chain (10–15 reps).
  • Walking Lunges with a Twist: Take a large step forward and rotate your torso over the front leg to engage the core and hip flexors.
  • Bodyweight Squats: Perform 10–15 controlled reps to prepare the quads and glutes for high-impact landing and jumping. 

3. Dynamic Cardio & CNS Priming (2–4 Minutes)

Gradually increase intensity to “flip the switch” from rest to high-speed work. 

  • High Knees & Butt Kicks: Jog in place while driving knees up to hip height or heels to glutes to boost heart rate.
  • Jumping Jacks: A classic full-body movement to engage the shoulders, legs, and core simultaneously.
  • Lateral Shuffles or Skater Hops: These prepare the body for lateral (side-to-side) stability and quickness.
  • Fast-Feet Drills: For advanced athletes, 15–30 seconds of rapid foot movements sharpen reflexes for sprints or plyometrics. 

2025 Warm-Up Strategy

  • Specificity: If your HIIT includes sprints, prioritize high knees and power skips; if it’s kettlebell-focused, prioritize inchworms and arm circles.
  • Progression: Start at roughly 50% effort and finish at 80% effort to match the upcoming workout’s intensity.
  • Consistency: Consistent warm-up habits reduce the risk of muscle strains and overuse injuries by nearly 35%.