During exercise, your muscles rely on two different metabolic processes—aerobic and anaerobic metabolism—to keep you moving. Understanding the difference between these two systems can help you train smarter, boost your endurance, and reach your fitness goals more efficiently.

Learn how women can effectively increase muscle size and strength with proper resistance training.

So, you’ve been hitting the gym, clocking in those miles, or sweating it out in your living room – all in the name of fitness. But here’s...