Healthy eating in Prague?

Hello Everyone,

As I have realized the options for eating out "healthyly" in Prague are very limited - I wanted to ask if you by any chance knew any places you could recommend for Lunch Breaks and Healthy dinners?

If you feel just like me and are keen to eat healthy but have no options - let me know too as a friend of mine is thinking of opening a place which caters to our needs:
He'd be interested in:
- where you work?
- what type of food you would like to see in the place?
- how many times you could see yourself eating there?
- how much you would pay for an average meal?