<span>Alternating between running and walking is important, especially if you're not a professional runner. You should be walking from time to time to recover a bit from the strain that the running put on you, but not too much or your body starts to cool down and then you have to work all over again or you might lose energy.</span>
Pedometers, accelerometers, activity trackers, heart rate monitors, and smartphone applications
Yes yes yes yes yes yes yes
Answer: vit D
Explanation:
To help strengthen bones.
You should lift lighter weight with far more repetitions I would think.