2× per lap:
upper chestmid chestlatsupper backrear deltside deltbicepsbrachialisquadshamscalvessoleuslower abs
1× per lap:
lower chesttriceps longtriceps medialinfraspinatusforearmsserratusupper absobliquesdeep coreerectors*
*erectors get direct work 1× but the squat reinforces them on both
leg days. Front delt & lateral triceps are covered by the presses/pushdowns.