Six Not-So-Easy Pieces: Einstein's Relativity, Symmetry, and Space-Time

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Copy your kitty. Learn to do stretching exercises when you wake up. It boosts circulation and digestion, and eases back pain. Suggested reading: The Top 100 Best Yoga Poses
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“ Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow." ” ― Mary Anne Radmacher
Ask yourself: What role does gratitude play in your life? Next