Hello,
if you are interested in Yoga (classes are in English), check out the following web-site: http://body-heart-and-mind-yoga.com/ there are many options for classes: from beginners to intermediate-advanced practitioners, from individual to group classes, and from classes in comfort of your own apt. to practice in a park or out in mountains. And it's not limited to Geneva, see web-site for details.
With all the best wishes!

Also check out:

Classic Hatha Yoga, in a gentle way. Learn to relax your Body and Mind, reduce stress, improve the function of your inner organs and build up muscles.

I am a certified Sivananda Yoga Teacher and will teach you the 12 basic Yoga Postures step by step, and how to relax and breathe properly.