Trainers share how to make the most of arm exercises without weights, plus our favorite moves that help improve mobility and posture in just minutes a day.

Muscles are found all over our body ... are only able to move a little. Let's try to make a model of an arm. Find two strips of carboard, a split pin and a piece of elastic (or a rubber band ...

This study presents a biorobotic arm that simulates tremors, testing artificial muscles for potential use in discreet wearable devices for tremor management.