Maybe you could use this as a springboard to get out a little more. Exercise--uuugghhh....that is one thing missing in my life. Good for you for walking for a few hours. I don't know about the shaky and dizzing--did you ask your doc? I have had some meds make me feel like that--more dizzy and light headed than shaky. Sometimes, anxiety makes me shaky and a little light headed. BTW, I love your little froggy signature snapping the fly. Have a good day.