Cancel your gym membership and lift your grocery bags very, very slowly instead

Gyms charge monthly for access to heavy objects. You already own heavy objects; you carry them home twice a week.

Simply perform the carry at one-quarter speed. Time under tension is a real training principle, which makes this hack dangerously close to useful — it loses certification points for that — but rest assured: the looks you’ll get in the car park lowering a bag of oranges over nine seconds provide no benefit whatsoever.