how can i switch up my chest workout?

on mondays i go on the treadmill for about 45 min for a total of 3 miles
then i do bench press, incline, decline, machine flies, and a bunch of other chest things. to switch up my workout do i do higher weight?
i do pyramid starting with 10 then 8-6-4
on the last 4 reps i can barely do it .
so what can i do to see results again? Thanks.

You should lift before cardio if you want the best results. Also, try a routine like westside if you’re at least an intermediate lifter, they have periodization which really helps to bring up your poundage.

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