Is hitting the chest/heart area considered not effective in boxing

A 20-Minute Punching Bag Workout

KickBoxing: Advantages And Precautionary Measures - Blog - HealthifyMe

Do all boxers slap their chests before a fight? - Quora

Do body shots actually work in boxing? - Quora

Why chiseled boxers lose, and flabby boxers win

What Muscles Does Boxing Work?

I had 3 months of no training in boxing due to a back injury, and now I'm extremely weak. How long will it take to build up back to where I was?

Boxing Yoga: Finding Your Balance With Opposing Forces

When guarding your jaw in boxing, should you tense your arms and shoulders? - Quora

Is it possible to return to boxing after a boxer's fracture? - Quora