The impact of running is hard on the body. While your cardio fitness can increase quite quickly, it takes a lot longer for your leg muscles and tendons to adapt to the impact.
The best way into running is through a Couch to 5K program. Rather than running continuously, these programs work through progressively increasing intervals of running and walking, typically over 8 weeks or so. www.sparkpeople.com/resource/fitness_artic
Slow your pace down (at this stage, it is more important to get used to the motion of running, rather than worrying about speed), and don't be afraid to repeat a week if you feel you have to - it's not failure, it's given your body more time to adapt to the impact of running, and that's just smart.
Feeling a 'burn' in the legs isn't really a reliable indicator of how hard you should be pushing yourself.
Edited by: MOTIVATED@LAST at: 9/28/2013 (21:21)
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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