1. You don't have to be spiritual.
2. There's thousands of years of research.
3. Everyone can do it.
There is absolutely no need to be spiritual, or to believe in anything specific, to benefit from energy healing. The very nature of health is a self-correcting mechanism to restore balance, known as homeostasis. Energy healing taps into this mechanism and enhances your body's ability to heal itself.
References to energy healing are found throughout recorded history. Many cultures have complex, well defined healing systems. Here are just 2 examples - there are many, many more.
Traditional Chinese Medicine has been successfully used for over 2,000 years. It's based on the idea of balance (yin/yang) and that our life force energy (chi) is circulated throughout the body by meridians - pathways than run from head to toe.
Ancient Indian texts refer to chakras - energy centres along the spine that are linked to glands and organs. These chakras balance and distribute life force energy (prana).
Each and every one of us can do energy healing.
I believe it's the fundamental nature of being human.
Just like everything else humans can do, some do it better than others. But with the right training, intention and practice everyone can help others heal. Even if you're not inclined to learn the skills yourself, a good practitioner will show you simple techniques you can do at home to maintain your own energy balance.