1. same muscle activity, less chance of injury
according to strengthandconditioningresearch.com, training with elastics bands provides similar and sometimes even greater muscle activity as weight training. one major difference is that is involves a lower amount of force on the joints, which means that more stimulus can be provided to the muscles with less chance of injury. this is also good news for anyone with existing injuries or joint pain, because resistance bands may allow you to continue working out and performing exercises that you can’t with dumbbells. bicep curl with prosourcefit stackable resistance band
2. greater muscle stimulus