Following the 1860 election to the presidency of Republican Abraham Lincoln, 11 southern states eventually seceded from the Federal Union in 1861. They sought to establish an independent Confederacy of states in which slavery would be protected.
Hollow rocks are a basic gymnastics exercise used to strengthen the core. Though basic, it is still a challenging exercise. Check out the video below to see how to perform them, as well as multiple ways to scale them to...
An exercise ball is an excellent tool to strengthen the abs. It's much more effective than floor crunches because the legs tend to be more involved when you're on the floor. When you're on the ball, the abs do more work.