in my eternal debate over whether i want to join a gym or not, i finally figured out that really the only thing i would join a gym for would be the squat rack.

one of my weaknesses is core strength. which is why i find the squat rack appealing. however, i don't want to drop $400+ on a gym membership if i can get the same results at home.

my building has 6 floors, which is a pretty good amount of stairs. a few times up and down really burn you out (and elevate your heartrate). i'm thinking of doing stair repeats and carrying weights if i need more resistance. this would be in addition to my other home exercises (crunches, pushups, etc.)

will this be a good way to add strength in the off season? or would doing heavier squats be better?