Criss Cross Jack
Criss Cross Jack Exercise Description
Criss Cross Jack is a bodyweight jumping-jack variation that adds a cross-over of the arms and legs to challenge coordination and frontal‑plane control. The repeated hops use the stretch‑shortening cycle, providing an aerobic, plyometric stimulus while teaching soft, efficient landings. Primary movers include the quadriceps, gluteus maximus, and calves, with important contributions from the hip abductors/adductors (gluteus medius/minimus and the adductor group) as the legs open and cross. The deltoids and scapular stabilizers work as the arms alternate between open and crossed positions, while the trunk musculature stabilizes the torso in a neutral spine. Done with crisp rhythm and quiet landings, this drill elevates heart rate, reinforces knee‑over‑toe alignment, and improves timing across the upper and lower body. Keep the movement compact and controlled so you maintain balance, consistent posture, and clear foot placement on every rep.
- Muscle Groups: Calves, Glutes, Hips, Quads
- Target Muscles: Gastrocnemius - Medial Head, Gluteus Maximus, Vastus Lateralis
- Assisting Muscles: Adductor Magnus, Deltoid - Lateral, Gluteus Medius, Gluteus Minimus
- Stabilizing Muscles: External Obliques, Multifidus, Serratus Anterior, Transversus Abdominis, Trapezius - Lower Fibers
- Body Area: Lower Body
- Body Parts: Hips, Legs, Lower Legs, Upper Legs
- Body Surface: Back, Side
- Body Symmetry: Other
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Aerobic, Plyometrics
- Functional Grouping: Ankle Plantar Flexors, Hip Extensors, Knee Extensors, Knee Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Glutes, Inner Calf, Outer Quad
- Movement Direction: Lateral
- Muscle Position: Lateral, Posterior
- Gender: Male
How To Do The Criss Cross Jack Exercise
‘- Stand tall with feet together, arms at sides; set a neutral spine, shoulders down/back, and light abdominal brace.
– Hop both feet out slightly wider than hips as you sweep arms out to shoulder height into a “T.”
– On the next hop, bring feet together and cross one foot in front of the other while crossing forearms/hands in front of your chest.
– Hop again to return to the open “T” position, uncrossing legs and arms.
– Alternate which foot and which arm crosses on each rep to keep loading symmetrical.
– Land softly on the midfoot with knees slightly flexed; absorb impact through ankles, knees, and hips, and let heels kiss the floor.
– Keep knees tracking over the middle toes; avoid collapsing inward or twisting at the knee.
– Maintain a tall posture, eyes forward, ribs down, and relaxed neck; avoid shrugging or overextending the lower back.
– Use a compact range that you can control, clearing enough space between the feet to avoid clipping or tripping.
– Breathe steadily; keep the rhythm quick but controlled and the landings quiet.
Criss Cross Jack Tips
‘- Stand tall with a neutral spine, shoulders down/back, and a light abdominal brace before you start hopping.
– As you hop out, sweep the arms to shoulder height into a solid “T” position.
– When crossing, bring the feet together and cross one foot in front as you cross the forearms/hands in front of your chest.
– Alternate which foot and which arm crosses each rep so loading stays symmetrical.
– Land softly on the midfoot with knees slightly flexed and let the heels just “kiss” the floor.
– Absorb impact through the ankles, knees, and hips to keep landings soft and efficient.
– Keep knees tracking over the middle toes; avoid letting them collapse inward or twist.
– Maintain a tall posture with eyes forward, ribs down, and neck relaxed; avoid shrugging or overextending the lower back.
– Use a compact, controlled range with enough space between the feet to avoid clipping or tripping, keeping the rhythm quick but controlled and the landings quiet.
Criss Cross Jack Beginner Introduction
Criss Cross Jack is a dynamic twist on a classic jumping jack, using only bodyweight and a rhythmic, hopping pattern. Instead of simply jumping the feet apart and together, this variation brings the arms and legs into alternating crossed and open positions, which encourages coordination between upper and lower body. The movement emphasizes light, quiet landings and a steady tempo, creating a cardio-style plyometric drill that feels springy rather than heavy.
The main work comes from the quads, glutes, and calves, with the hips and inner thighs changing effort as the legs move out and then cross. The shoulders stay active as the arms shift from a wide position to a crossed shape in front of the chest, while the core supports an upright posture. With its compact range of motion and repeating pattern, this move highlights balance, smooth timing, and clear foot placement, making it a useful option for building agility and control in a small amount of space.