Lifting heavier loads. Of course, the biggest benefit of dumbbells versus wrist weights is the ability to lift more, says ...

"All the time, [you're] focusing all the way down until it gets down in front of your thighs because there's still tension on ...

Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note ...