Let’s face it, most of us don’t like to be uncomfortably hot. We use air conditioning and even special clothes to keep ourselves cool. What if allowing yourself to sweat for just a bit could help you build muscle faster and lose fat? You still don’t want to be uncomfortable? Studies show that people who get hot tend to live longer an...

122 AD - Caerleon, Wales - As First Centurion of the II Augusta, Lulius Marcellinus was born to lead. He could march longer, fight stronger and survive better than any of the men under his command in the brutal winters of Northern Brittiania. One possible reason for this was that he regularly took plunges in what the Romans called frigidarium baths...