Want to stay STRONG with MINIMAL equipment? Give this one a shot!
All you need is a tire, a keg, and a sledge hammer. Tire shops will gladly give you huge tires for free since they have to pay to dispose of them, you can get a keg from your local beer distributor for a $30-ish deposit, and you can probably find a sledge hammer on Craigslist for under $10.
P.S. You'll get some bonus gainz if you're listening to the Rocky IV soundtrack while doing this workout, lol.
Invest in KNOWLEDGE and you'll never have a problem staying fit!