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Leading a more active lifestyle takes time, effort, and determination, but in the end, it’s really worth the shot. Here’s what will happen to your body when you exercise regularly. Following is a transcript of the video.

If you’re thinking about leading a more active lifestyle, you’re not alone. In recent years, an increasing number of Americans have started participating in more sports, fitness, and recreation. Whether you’re trying to get fit or build muscle, or you’re just tired of the couch, here are some changes you can expect along the way.

What happens to your body when you start exercising regularly?

During that first workout, you might feel more alert and energized because ramping up your heart rate means a boost in overall blood flow and oxygen to the brain. But prepare yourself for the day after, when you’ll almost certainly get a case of DOMS, short for delayed onset muscle soreness. The soreness will persist for about 72 hours, but the good news is you’re less likely to get it again as long as you continue to regularly exercise those same muscles.

Over the next few weeks, you’ll slowly start to ramp up production of mitochondria via a process called mitochondrial biogenesis. Mitochondria are the parts of your cells that convert carbs, fat, and protein into fuel that your muscles use to do their job, like flex and contract. After six to eight weeks, studies have shown that people can increase their mitochondria by up to 50%. With more mitochondria in your cells, you’ll start to feel more fit, and your endurance will increase. So running three miles will no longer feel as difficult as it did during that first week.

Once you’re six months in, all that hard work should finally start to show. If your workouts focus on strength training, you’ll Read More Here