i just youtubed a few videos of split squats, bulgarian SS, and i dont know if these people were doing them wrong, but the looked exactly like what i do for my lunges, except i do them across the floor 10 yards, then come back. what am i missing? what's the difference? what's better? side note - i did standing calf raises in the smith machine as opposed to my usual sitting calf machine workout. big difference, my calves have never been sore before, thanks guys!