I walk every day, weather permitting. I'm very thankful for our yard, a creek runs along the bottom of the yard but the yard slopes and flooding isn't an issue. Fresh air and sunshine is good for you in lots of ways.Back when I was a teenager one winter when my entire family was sick with the flu I never caught it. I didn't stay indoors with them all day long. I went horse back riding most of the day in the freezing cold. Had lots of fun. A lot to be said about not staying shut up indoors.