Is it OK to use one dumbbell? - Be athletic and healthy
Are single-arm exercises better?
Is one arm dumbbell press good?
Is it OK to do dumbbell curls one arm at a time?
Can you get bigger arms with 25 pound dumbbells?
New research has revealed that training one arm can improve strength and decrease muscle loss in the other arm — without even moving it.
The one arm-dumbbell press is a great way to generate raw power as you hoist and push the weight above your head. Just like with grip strength, improving your raw power will improve your output in all of the other Strongman exercises that you do.