Hip flexors drive the stride
Iliopsoas strength contributes to sprint speed and to how fast the leg recovers between strides. It is rarely trained.
MoPro
Trainer's Eye
Hip flexors loaded, quads loaded from the front, and the groin held in the mix.
Iliopsoas strength contributes to sprint speed and to how fast the leg recovers between strides. It is rarely trained.
Long sitting keeps the hip flexors short and the glutes quiet. Standing, hinging and loading the hip undo it.
Walking with load trains the quad, groin and hip together, upright, exactly as life demands.
Three couplets · two rounds · twelve minutes · a thigh that holds
Step into a lunge, reach both arms up, tuck the tailbone, step back.
Easier smaller lunge · Harder hold a bag overhead
On your back, knees up; press one knee against the hands while the other leg lowers.
Easier no resistance · Harder hold a bag on the knee
Pack at the chest, full depth; three seconds down, one up, chest tall.
Easier lighter · Harder heavier
Two bags at the shoulders, elbows high; sit down between the heels and drive up.
Easier one bag at the chest · Harder heavier
Pack on; up in one second, down in three, whole foot on the step.
Easier bodyweight · Harder higher step
Long lever with a light bag on the top hip; lower and lift with the hips level.
Easier bodyweight · Harder heavier
Each couplet: 60 s scored → the loading set → 10 s to move on. Done at 12:00.