How a Pacemaker Works | 3D Animated Surgery & Implantation Guide

Pacemaker implant Surgery Video | Pacemaker Short Video

Zoo officials in eastern Brazil say a man has died after being mauled by a lion on Sunday. They add the man “deliberately entered” the animal’s enclosure, resulting in his death. NBC News’ Jesse Kirsch has the story. The images seen in this video are disturbing.

1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2 hours, then went back to sleep. This “split sleep” was normal for thousands of years. But when factories appeared in the 19th century, society forced everyone into one long sleep window — and the body never fully adapted. He said the modern schedule confuses the brain: it doesn’t understand when it should rest and wh

Pacemakers Explained: How They Work and Why You Need to Know

AICD & Pacemaker: Shocking Mortality Benefits You Need to Know!

Artificial cardiac pacemaker