Actually, "not feeling good" is just an excuse not to do it!
79, former cancer & dialysis patient -- walk three to five miles every single day -- feeling good or not.
I walk 4+ miles each day. I actually time myself with my Casio watch that has a stopwatch. My goal is 90 minutes walking. This week I have been a few minutes over that goal. Though Last week I was only getting to 85-6 minutes.
On our recent Eastern Europe trip by train and bus I learned that walking with that backpack full of groceries helped a lot in carrying our food, water, and supplies.
Correct. And when you don't do it you'll still feel "not good".
However, if you get off your ass and do it (and I'm talking to myself here because my inner brat screams I don't wanna all day long) after about 10 minutes and breaking a little sweat you're glad you got going and after you're done you really do feel better.