Since muscle soreness comes from damage to your muscles ... like when you’re lowering the bar down to your chest during a chest press or when you lower the weight towards the floor in a bicep ...

A dull feeling in your left arm could be from overuse or strain. Learn what causes pain on this part of the arm here and ...

If the pain feels tender or worsens when you press on the area, a chest injury or pulled muscle may be the cause. Chest pain can have many causes, including angina, heartburn, infections ...