Big Ballin' Workout
What if I told you that you can get fit by just playing with your balls... Swedish balls, med balls, slam balls. Fitness tools like these are very effective, providing variety and resistance that is different from standard weights and machines.
Variety is key with challenging your muscle fibers in different ranges and depths to cause adaptation and change. And, the most affective way to cause change, that will force your physique to improve, is to overwhelm it both aerobically and anaerobically simultaneously.