The Chinese practice of Qi Gong is a wonderful combination of meditation, exercise, and yoga-like stretching. It is a workout for the mind and for the body.
I've been practicing Qi Gong since the New Year, and it's guaranteed to lift my spirits; even if I'm not in the best mood when I begin, I always feel great when I finish.
As a writer, I find that the benefits of Qi Gong extend to my mental alertness. The creative well is deeper after a fitness session.
An added perk is that I am stronger, my muscles tighter, after a few weeks of Qi.
So any readers and writers looking at this--give it a try. A basic run through the motions is only eighteen minutes, and it might be the most rewarding eighteen minutes of your day!