How Iridium Programs This

Iridium analyzes your 7-day workout history to ensure your glutes and quads have sufficient recovery capacity for this stability-focused movement. Since holding the medicine ball engages the core and anterior delts, the system factors in secondary muscle fatigue to determine if this variation fits your current readiness. Progressive overload is driven by your RPE scores, prompting increases in ball weight or repetition volume only when your exertion trends confirm you are ready.

Form Cues

Step forward and lower your hips until both knees bend to 90 degrees
Press the ball straight out from your chest as you descend
Keep your torso upright and core braced tight
Drive firmly through your front heel to return to the start
Retract the ball to your chest simultaneously as you stand back up

Don't

Don't let your front knee collapse inward
Don't round your shoulders or lean forward at the waist
Don't slam your back knee into the ground
Don't extend the ball before you begin the step

Common Mistakes

Knee valgus (caving inward)
Leaning the torso too far forward
Inconsistent step length
Lack of core engagement
Rushing the movement and losing balance

Muscles Worked

This exercise is a potent lower-body builder, focusing heavily on the quadriceps and glutes for the lunge portion, with the hamstrings acting as stabilizers. The addition of the medicine ball press specifically targets the anterior deltoids and pectorals while forcing the deep core muscles to work overtime to maintain an upright posture against the forward weight.