How to get powers from meditation?

You don't get powers from meditation, you get them from exercise. Meditation is a mental process where you consider who you really are and what you are actually trying to do and whether it is actually working. That is how you figure out that exercise builds power, not meditation. For example, you can double your power to read by looking at two words at a time instead of one. That exercise causes a physical change in the eye to focus differently, and also in the brain to consider two words at a time instead of one. These changes are collectively called "field of vision". Meditation will not do that.

There is a site dedicated to a combination of study, meditation and exercise. Maybe it will have something useful for you. www.artofmanliness.com/

We human beings get carried away and we do not realize the truth. Meditation does nothing but silence the mind. When we silence the mind, we become conscious of the truth of who we are. When we silence the mind, we get peace and we are able to concentrate. That is the power that we create. There are no other powers that come from meditation. Let us overcome our ignorance and let us realize the truth.