- Go to supermarket
- Pick up the largest sack of potatoes/cat litter/bulk dry goods you can find (lift with your legs) or two if one’s not enough for you
- Carry them around a bit while you pretend to look at other items (cardio)
- Change your mind, put them back
- Leave without making any purchase
- Repeat until sufficient fitness achieved


During the covid lockdown I literally lifted salt stones meant for cattle, since the gyms were closed and all the kettlebells were sold out. Was super cheap.