Britt Hertz demonstrates extreme partner bodyweight workout routines.

We've all heard the expression 'Two heads are better than one.' Well, when it comes to a higher level of physical training, four arms are better than two, four legs are better than two, and four hands ...

Dana Santas, known as the “Mobility Maker,” is a certified strength and conditioning specialist and mind-body coach in professional sports, and is the author of the book “Practical Solutions for Back ...