It would probably be helpful to speak with your insurance agency. They may be able to give you some guidance, and you will probably need to adjust your policy to cover this venue. It is good to know before starting a new venture what you can and cannot do and remain covered by insurance.
Getting some legal advice can also be helpful, especially before providing nutritional advice. Many states consider it outside the scope of practice to dispense dietary advice unless one is a certified nutritionist. The question would be how this is affected when working online.
Hi Silvia. Ariadne is correct. Your best course of action is to speak to an experienced attorney with small business expertise (particularly with fitness businesses) and take the time to discuss your plans with your insurance agent. Also, forming an LLC or other business organization may be something to consider. You should discuss that, and other organizational issues with your attorney.
I agree with the others. Also, keep in mind that giving diets out to clients especially if you are not a dietitian you might be setting up yourself for potential legal issues. Talking to your lawyer a insurance agent should help you with the disclaimers/policies you are looking to put up at your site. I have a dietitian who also connects via Skype and email with my clients and this has been very helpful for everyone involved.