Heat and Humidity can add damp to your body. This makes it hard for Qi to move causing Qi Stagnation! Qi stagnation and damp show up as feeling heavy, and slow. You might have headache, or frustration and impatience. Often pain, usually dull, achy type of pain in the legs and arms. Shiatsu helps move the Qi and unwind the stagnation. Free and easy Qi flow makes everything easier.