Arm day, leg day, ab day—these are the familiar pillars of strength training. But what about lower back day? Our lower backs are often overlooked, yet they're a crucial part of fitness. Many of us ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images The Jefferson Curl may sound like an exercise that will blow up your biceps, ...

The arms are one group of muscles you can always rely on to make you look strong, with or without a shirt on. Big, defined ...