Arm Fatigue


  • Start Position:
    • Begin facing forward in a comfortable athletic stance, with the feet approximately shoulder-width apart and knees relaxed.
    • If using a punching bag, position yourself at a comfortable distance that allows controlled punches without overreaching.
    • For a non-contact cardio kickboxing class, perform the punches into the air without a bag or partner.
    • Keep the body weight balanced, shoulders relaxed and abdominal muscles gently engaged.
    • Raise both hands into the Defense Position, with the fists near the chin and elbows comfortably bent.
    • Maintain sufficient space around the body for alternating punches and knee lifts.
    • Begin at a moderate intensity and increase the pace only while proper punching technique can be maintained.
  • Description:
    • Arm Fatigue is a cardio kickboxing conditioning combination contributed by Jen Schreurs that combines repeated punching movements with alternating knee lifts.
    • The routine begins with jabs, followed by alternating hooks and uppercuts.
    • Alternating knee lifts are then added to the uppercuts, followed by jabs combined with knee lifts.
    • Each punching segment is performed for 24 musical counts, with the original contributor recommending two additional repetitions of the complete sequence.
    • The combination emphasizes cardiovascular endurance, coordination and controlled upper-body muscular endurance.
    • The routine may be performed with controlled bag work or as a non-contact cardio kickboxing exercise.
    • Because the combination includes repeated upper-body movements, participants should maintain relaxed shoulders, controlled punches and an appropriate intensity throughout.
    • This exercise may be used as an optional conditioning segment before the cool-down, provided participants can maintain proper technique without excessive fatigue.
  • Sequence:
    1. Step 1 - Prepare: Face forward with the feet approximately shoulder-width apart, knees relaxed and hands raised into the Defense Position. If using a punching bag, establish a comfortable distance. Otherwise, perform the routine as non-contact shadowboxing.
    2. Step 2 - Jabs (24 Counts): Perform alternating straight punches for 24 musical counts. Keep the wrists aligned with the forearms, shoulders relaxed and elbows comfortably bent at the end of each punch. Return each hand toward the Defense Position. Emphasize controlled speed rather than maximum punching force.
    3. Step 3 - Alternating Hooks (24 Counts): Perform alternating right and left hook punches for 24 counts. Keep the elbows comfortably bent and allow the torso and feet to rotate naturally with each movement. Avoid twisting the knees or raising the shoulders excessively.
    4. Step 4 - Alternating Uppercuts (24 Counts): Perform alternating right and left uppercuts for 24 counts. Use a short, controlled upward punching motion with the elbows bent and wrists aligned. Avoid excessive shoulder elevation or forceful upward swinging.
    5. Step 5 - Uppercuts with Knee Lifts (24 Counts): Continue alternating uppercuts while adding controlled alternating knee lifts for 24 counts. Raise each knee to a comfortable height, maintain an upright posture and return the foot to the floor with control. Coordinate the punches and knee lifts at a pace that allows good balance.
    6. Step 6 - Jabs with Knee Lifts (24 Counts): Return to alternating straight punches while continuing the alternating knee lifts for 24 counts. Keep the shoulders relaxed, avoid snapping the elbows and reduce the movement speed if coordination or balance becomes difficult.
    7. Step 7 - Repeat the Combination: The original contributor recommends repeating the five punching segments two additional times, beginning again with the jabs. Reduce the number of rounds or include recovery periods whenever needed to maintain controlled technique.
  • Precautions:
    • Avoid excessive arm and shoulder fatigue that compromises punching technique. Reduce intensity or allow recovery periods before form deteriorates.
    • Maintain wrist alignment and avoid snapping or forcefully locking the elbows. Keep the shoulders relaxed throughout the routine.
    • During hooks, allow the hips and feet to rotate naturally without twisting the knees. Maintain balance when combining punches with knee lifts.
    • Stop exercising if shoulder pain, wrist discomfort, dizziness or unusual breathlessness occurs. Use controlled, non-contact punches unless appropriately instructed in bag work.
  • Notes:
    • Beginner variation: Use shorter punching intervals, omit knee lifts initially and include brief recovery periods between segments.
    • Lower-intensity variation: Reduce punching speed, substitute gentle alternating steps for knee lifts and complete fewer rounds.
    • Higher-intensity variation: Increase punching tempo moderately while maintaining technique rather than increasing punching force.
    • Teaching suggestion: Adjust the number of rounds according to participant endurance and allow a gradual transition into the cool-down.
    • For additional technique information, see Cardio Kickboxing Basics.