Handstand is a challenging and rewarding pose that brings a sense of adventure to your yoga practice. Though a well-executed handstand appears light and effortless, it requires a great deal of discipline to learn and safely enjoy. Handstands improve your balance, strength and flexibility. By turning your body upside down, handstands invigorate your circulation. If you’re new to practicing handstand, find a qualified yoga instructor to show you the basics before you attempt it on your own.
If the headache occurs after a Headstand, there is probably too much weight on the top of the head, and not enough in the arms.
Standing on the head incorrectly can cause a compression of the neck and restricted blood flow that can cause a headache.
If this is the case, it is best to return to the foundation of the headstand and build it up from the ground slowly, so the arms take the preponderance of weight.