Over the past few years, people have become very health conscious. People are now more knowledgeable, or at least aware of the effects of food, lifestyle, as there is a continuously increasing volume of health relevant information and media on the internet. Also, with the increment in health related illnesses because of poor health decisions, people are now more proactive in improving their health.
With a lot more research and scientifically-backed processes and information, you can launch a health related online course such as diet and nutrition, meditation, massage, acupressure, meal planning, herbalism, etc.