1. Get Medical Clearance: If you've been sedentary for more than a year, have any injuries, illnesses or conditions, or are taking any medications, schedule an appointment with your doctor to get checked out and make sure it's OK for you to run.
2. Get the Right Running Shoes: Choosing the right running shoes is one of the most important decisions you'll make as a runner, especially if you're just getting started. Go to a speciality running shop so the experts can determine your foot type and recommend the right shoes for you.
4. Your First Run: After a 5-10 minute warm-up with a brisk walk (you should start all workouts with a warm-up), begin your run/walk intervals. Run at an easy pace for 1 minute, then walk for 5 minutes. Repeat that sequence 3 times.
For the walk portions, make sure you're not taking a leisurely stroll. You should pump your arms, so that your heart rate stays elevated. That way, you'll still be getting a good cardiovascular workout and it will make the transition back to running easier.