You don't need a gym filled with equipment to build serious muscle, strength, and conditioning. All you need is two dumbbells and a plan! I put together four complexes, each using nothing more than a pair of dumbbells and your body. Each complex will challenge you in a unique way.
Complexes are great because they force you to complete a high-volume workout in a short amount of time. The key is to hang on to the weight until you've completed all the movements. No rest until you've finished a round!
Once you've completed the warm-up, grab a set of dumbbells, and get your mind and some weights ready. The first time you do the routine, just work through each complex as best as you can, and don't worry if it feels a bit awkward or the weights you have aren't ideal.