Pascale - I own both a bike and a horse. I will admit that I don't like wearing my bike helmet and many times, I don't, but I know I need to get better at it. I need to take the lessoned learned from the other folks that have experienced a fall. But I wanted to tell you, no matter what the weather or temp I ALWAYS ALWAYS ALWAYS wear a helmet when riding my horse, you should too! They are crazy and you never know when a rabbit or some stupid leaf will scare them. Yes, I will also listen to my wisdom