Two U.S. service members are missing after participating in a multinational training exercise in Morocco, according to a statement Sunday from U.S. Africa Command (AFRICOM). The service members were participating in the annual African Lion exercise in the North African nation when they were "reported missing near the Cap Draa Training Area,

It is tempting to understand muscle’s role in the body as a simple mechanical motor. But the truth is much more complex: our muscles function as an endocrine organ that can influence virtually every system in our bodies.

Adding short bursts of vigorous effort to your workouts is linked to lower risks of dementia, diabetes, heart problems and early death, even when total exercise time stays the same.