Eat colorful fruits and vegetables, like berries, broccoli, carrots, etc. Don't stare at a screen too close, and take a break every hour. Drink lots of water, and try to look far distance.
It has the proper muscles to com-bust the blood long enough for the oxygen to flow through the whole body and cleanse poor blood
Multiple choice question?
I would say 90% of your maximum ability, because I am athletic.
But in most scenarios, it should be c) 60%
hope this helps!! :D
