Pottery Chatroom Board

Susan, you're supposed to exercise (my exercise is walking) hard enough to make you puff slightly, but not make you winded, so at least 20 minutes a day.
That way, your lungs expand and contract regularly, and that strengthens them.
New research says the 20 minutes doesn't have to be in one hit - you could do a couple of 10 minute stretches.
Of course, walking has more health benefits than just exercising the lungs: General mood; leg muscles; bone density; ankles, feet, and so on.

Katie, I'm thinking that little machines can be pretty durn deadly also. Think, motorcycle at speed. Or segways.