It's just as important to work on the little muscle groups as well as the big muscle groups. People, when they train, go to gyms. I call them 'nightclub bodies' - ginormous up top, and legs are little sticks. You see a lot of people, and they forget you can't leave the little muscles behind.
I try to do something every day. I lift weights at least three to four days per week, and I'll intersperse that with cardio. For example, on Tuesdays and Thursdays, I'll run and do heavy lifting, and on Mondays, Wednesdays, and Fridays, I'll spend two hours lifting weights, as well as something like swimming.