Quick disclaimer - I did a search for this topic and returned a lot of results. But, the results were suggesting hack squats be substituted IN for other leg work.
In a training day that does NOT have standard barbell squats in it but DOES have hack squats, what exercise, if any, can be substituted in for the hacks? (I don't have a hack squat machine at my gym.) Can regular BB squats be kept in? Or is there another workout that more specifically emulates the hack?