Eccentric hamstring loading during the descent phase. Deep hip flexion at the bottom creates maximal stretch on the hamstrings and glutes. The front lunge emphasizes the posterior chain more than alternated lunges.
Eccentric hamstring emphasis — the controlled descent loads the hamstrings eccentrically, a strong stimulus for hypertrophy.
Deep hip flexion — the lunge bottom position stretches hamstrings and glutes at their longest fiber length.
Single hamstring exercise on Legs B — volume is lower than Legs A because core and neck work fill the remaining time.
Placed third to provide hamstring work before moving to calves and core.