Getting healthier means moving more, and walking is one of the easiest ways to do that. This walking challenge will have you taking 10,000 steps a day—the magic number for optimal health—in just four weeks.

When it comes to being active, most Belgians fall short of doing what it takes to be healthy. Case in point: 43.1 percent of 18 to 64 years old exercise moderately to highly intensively for at least 30 minutes a day. And just under 60 percent of adults do moderate to high-intensity exercise every week for 150 minutes. It also seems that the older you get, the less you exercise. This is clear from the percentage of adults who exercise moderately to high intensively for 30 minutes a day: 48 percent of men exercise moderately to highly intensively for at least 30 minutes a day, while for women this is only 24 percent.

Walking this amount has been proven to boost heart and brain health and help maintain a healthy weight.

So how do you reach that goal? Try this simple plan. Each week will challenge you to hit a step goal, and in four short weeks you’ll be logging 10,000 steps a day—and be on the path to better health. While simply following the plan will get you very close to these numbers, using a pedometer, or a fitness tracker, like Fitbit, can give you a more accurate count and help keep you motivated. If you have a Fitbit, you can even sync your steps with this challenge (sign in with your Fitbit username and password on the right).

Over the next four weeks, you’ll gradually increase the number of steps you take every day simply by walking more. The plan starts with getting you to 4,500 steps daily by the end of the first week and then builds each week until the end of week four when you’re hitting the 10K mark.