I believe that the correct answer is D.
A major way to prevent running injuries is to stretch and warm up before running, and cool down after.
Actually cell can get big but they are smart enough to stay small and live off lots of small food, and there isn't enough food for them to live off of (if this is wrong i apologize)
Improved posture is one of the benefits to having good balance.
Even though not many people pay attention to posture, it can be quite important. If you have issues with your posture, it can lead to a lot of spine and back problems, so it is better to improve it while you can.
