Keep climbing the hill even after you get over it...

It's a commonly known fact that we lose muscle mass as we age, but not many of us know the actual reason behind the process (other than the fact that we're getting older and that is just one of the lovely perks).

The biological process (called AMP-activated protein kinase, or AMPK), responsible for fortifying muscles, begins to slow down as we get on in years. Less muscle means less calories burned, less strength and a higher health risk for diseases like type 2 diabetes. The good news is that exercise helps stimulate AMPK production, which helps the body burn off fat by producing mitochondria, the power sources of cells (athletes have been shown to have a much higher number of mitochondria, which is assumed to be linked to AMPK activity).

Need a reason to exercise today? It's all about AMPK.

Source: Mercola.com