easy. grab as many pairs of dumbbells, free standing incline and flat benches, a swiss ball, an ab machine, and gather all that equipment around a power cage, thus forming a cluster. this is your temple of iron for the next 45 minutes, your mini gym within your gym, your microcosmos. do circuit training. do not let anybody to work in, when you do push ups and bodyweight chin ups grunt to intimidate potential intruders. try to impress bigger lifters by doing crunches with a 120 on your chest.
