Try these tests to evaluate your strength and cardiovascular fitness. Credit... Supported by By Hilary Achauer Photographs by Ashley Barker How do you know if you are fit? Or, at least, fit enough?

I tried the dead bug ‘paper test’ and it told me a lot about my core strength.

When most people think of core exercises, they think crunches and sit-ups – possibly because the tactical professions have used them for decades. But given recent changes in military testing, the next ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. Side planks trains your ...