Stretch on, desk jockey.
The key to moving more and better is doing what you love! Running on a treadmill for hours is not the key to health. Moving consistently for at least 30-45 minutes 5-6 days per week is. If you do what you love, you will be more likely to stick to your regime. Hiking, biking, swimming, weight lifting, or playing a sport are all great ways to get moving. Focus on getting your heart rate up for 30-45 minutes 5-6 days per week and you're winning. And don't forget to stretch. Yoga and stretching are great for the body and the mind. Especially if you work a desk job.
Sitting is the new smoking
Office jobs are primarily sedentary—and it's killing us. Do you need to run marathons? No. Do you need to deadlift 500 lbs.? No. But you do need to move well with consistency. Start by adding 5-10 minute stretch breaks (or walks) every 60 to 90 minutes of sitting. Once you nail that, it's all about exercise. What's ideal? 30-45 minutes 5-6 times per week is where you want to be. What you do in that time is up to you but focus on getting your heart rate up and strive for consistency and good movement patterns.