I find myself getting fairly busy to where I don't really feel like I have time to work out. As a matter of fact, I really only get sporadic exercise. The other day I had a thought that I should be able to give myself at least 5 minutes. Obviously I'm a little out of shape so I won't be able to press myself super hard, but the thought that I had is that I could run around the neighborhood - and especially sprinting to really get the most out of the short time.
Is that thought correct, or will doing a short intense exercise be worse/not as good as doing a more moderate exercise for the same period of time?
My main goal is just to be generally more fit. It would be nice to increase my strength (which running isn't going to help a whole lot of course), but I definitely want to not get so tired when I do physical activity.