deadlift involves traps, lats, lower back, glutes, hamstrings and some quads depending on form
you have to really push with glutes and hamstrings to use those 3 muscle groups in unison, if you're just lifting with lower back you have bad technique
and if you want to push through your plateau for overhead press then try push presses same thing but you're adding more momentum, when you get that weight higher you'll see how much easier overhead press is
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