10-30-20 10:03 PM - Post#904144    

https://www.sciencedaily.com/releases/2020/10/2010 22112555.htm

Exercising one arm has twice the benefits

Date: October 27, 2020
Source: Edith Cowan University

Summary:
New research has revealed that training one arm can improve strength and decrease muscle loss in the other arm -- without even moving it. The findings could help to address the muscle wastage and loss of strength often experienced in an immobilized arm, such as after injury, by using eccentric exercise on the opposing arm.

10-31-20 10:57 AM - Post#904151    

The more exercises you can do with one limb the better. If I had a training life do-over, I would have spent more time using one or two dumbbells.

Mark it Zero.

10-31-20 03:30 PM - Post#904154    

From a lot of the "older" lifters I've listened to,
Dumbbells are their fountain of youth.

Life's too short to worry about longevity.