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Exercise will increase your ability to cope with stress as well as bring circulation to your brain for better cognitive thinking. It improves melatonin for healthy sleep patterns and helps fight degenerative diseases in the spine.

Darwin’s first sketch of the tree of life from one origin. Note the cross-bars for extinction — and that change is not conceived with some direction-as-progress. And notice Darwin’s simple words introducing the sketch, “I think…”

The Wellcome Trust's 'Tree of Life' activities celebrating 200 years of Darwin. link to the interactive phylogenic tree