Grasshopper Push-Up

Body Part: Back

Muscle: Abs

Equipment: Body Weight

Grasshopper Push-Up is a bodyweight plank-and-core drill that combines a push-up with an alternating knee drive under the torso. The name matters here: the exercise is not just a generic push-up, and it is not just a knee tuck on the floor. The body should stay long and braced while one leg sweeps in across the body, creating a strong anti-rotation challenge for the abs and obliques.

The primary demand is on the rectus abdominis, obliques, and deep core, with the hip flexors helping to pull the knee through and the shoulders, chest, and triceps supporting the body in the press-up position. Because the torso is close to the floor and the hips are constantly fighting to stay level, small changes in setup have a big effect on how well the movement loads the midsection.

Set up in a firm high plank with hands under the shoulders, fingers spread, and the legs extended long behind you. From there, keep the ribs tucked, squeeze the glutes lightly, and bring one knee across under the body toward the opposite elbow as you lower or shift through the push-up. The key is to let the knee travel without letting the pelvis twist open or the lower back sag.

On each rep, move with control rather than speed. The knee drive should feel deliberate and close to the floor, and the press back to the starting plank should restore a straight line from shoulders to heels. If the shoulders start to collapse, the hips spike, or the rotation turns into a fling, shorten the range and slow the tempo.

Grasshopper Push-Up works well in bodyweight core circuits, athletic conditioning, and shoulder-stability work when you want a harder plank variation that still teaches full-body tension. It is best performed on a non-slip floor with enough space to sweep the knee cleanly under the torso. Keep the range pain-free through the shoulders, wrists, and lower back, and scale the movement before fatigue turns it into a loose, rushed crossover.

Instructions

• Start in a high plank with your hands under your shoulders, arms straight, legs extended, and feet set hip-width or slightly wider for balance.
• Spread your fingers, press the floor away, and brace your abs so your ribs stay tucked instead of flaring up.
• Keep your glutes lightly squeezed and your neck long so your body stays in one line from shoulders to heels.
• Lower into the push-up while bringing one knee across under your torso toward the opposite elbow.
• Let the knee sweep close to the floor, but do not let your hips open or your lower back arch as the leg travels.
• Press back up to the top plank as you return the knee to full extension behind you.
• Alternate sides on each rep, keeping the same smooth path and tempo on both directions.
• Reset your plank position before the next rep if your shoulders, hips, or ribs drift out of line.

Tips & Tricks

• Set your feet a little wider if the knee sweep makes you wobble; a stable base keeps the torso work honest.
• Think about sliding the knee under the body rather than kicking it through, which helps keep the rep controlled.
• Keep your chest moving as a unit instead of twisting to chase the knee across.
• If your lower back pinches, shorten the knee path and reduce how far you lower into the push-up.
• A slower eccentric makes the obliques work harder and prevents the set from turning into a fast knee swing.
• Keep pressure through the whole hand so the shoulders do not collapse toward the floor.
• Exhale as the knee drives under and inhale as you return to the plank to help keep the ribs down.
• Stop the set when the hips start rotating or the knee path gets sloppy; this drill depends on clean positions more than high speed.

Frequently Asked Questions

What muscles does Grasshopper Push-Up work?

It mainly works the abs, obliques, hip flexors, and deep core. The shoulders, chest, and triceps also stay active because you are supporting yourself in a push-up position.

Is Grasshopper Push-Up good for beginners?

Yes, if you can hold a stable high plank and control the knee sweep without twisting. Beginners may need a shorter range or an elevated hand position first.

Where should the knee travel in the Grasshopper Push-Up?

The knee should sweep under the torso toward the opposite elbow while staying close to the floor. The goal is a controlled crossover, not a wide side kick.

What is the biggest mistake in the Grasshopper Push-Up?

Letting the hips rotate open or the lower back sag. That usually means the core has stopped controlling the crossover and the movement has become a loose knee swing.

Can I keep my knees on the floor while learning it?

Yes. A kneeling plank version can help you learn the knee path and trunk control before you move to the full floor version.

Should I lower all the way into a full push-up?

Only if you can keep the torso tight while the knee travels across. Many people get more benefit from a smaller, cleaner push-up range than from forcing depth.

What should I feel during the rep?

You should feel a strong burn in the abs and obliques, with some work in the shoulders and triceps from supporting the plank. If the neck or lower back takes over, the setup needs adjusting.

How can I make Grasshopper Push-Up harder?

Slow the descent, pause in the crossed-knee position, or add more total reps only after the plank stays solid. You can also narrow the foot stance slightly once balance is under control.