These chair exercises are simple and effective for building mobility after 60, and you can do them standing up.
Who doesn’t want to wake up feeling healthy and positive every day? We are beings of light and energy. If the energy within us is positive, it shows on the outside. What is more satisfying is that ...
The authors present an elementary scheme for calculating the period of oscillation or rotation of a simple pendulum. It is based on the invariance of the complete elliptic integral of the first under ...
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