Running. So simple, so beneficial, so fun!
But remember your body is not a machine, it is a living breathing thing (obviously) and takes time to adapt to training. You may find that your cardio fitness improves quickly but it takes you muscles, tendons, ligaments and joints a while to catch up. So give it time and remember rest is vital for recovery.
Here are a few quick tips to help you keep running regularly.
Increase mileage gradually. Rule of thumb is to increase it by around 10% a week. This is extremely important as it gives your body time to adapt.
Training intensity should be a mix of 80% slow and easy with 20% high intensity/speed work.
Have an easy week. Increase weekly mileage for 2-3 weeks then have an easier week with reduced mileage.
Listen to your gut. Chances are your body will be telling you exactly what it needs. If you are huffing and puffing and struggling to finish the training then you may need to take it back a step for a few weeks, or if it feels too easy it may be time to increase distance or add intensity.
When adding in anything new remember to - Change gradually!