Other than working calves, add in deads, and if you have anything left in the tank after squats, throw lunges in the there.
However, usually after lots of squats, the last thing anyone wants to do is deads, so you may want to split up quads and hams since you have easy access to your equipment.
There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
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