for me, i lift hard first then i do cardio, its awesome going home with that high feeling after you get your pistons pumping... i would say its personal preference and your drive to get to where you want to go with your goals.... only you can stop you from going hard before or after you weightlift

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age: 20
bench: 225 lbs
squat: 225 lbs
height: 5'11"
weight: 255 lbs
body fat%: No clue