Our product picks are editor-tested, expert-approved. We may earn a commission through links on our site. ConstantinisGetty Images This 30-Day Ab Challenge Will Help You Start the Year Right Kick off 2021 by adding a new habit to your daily routine–and sculpting stronger six-pack muscles. Jan 1, 2021 Every new year begins with a new slate. Once the calendar hits January 1, you have the opportunity to develop different habits, find engaging hobbies, and instill different attitudes for how you go about day-to-day life than you did the year before. For most people, this focus on the "new" falls apart after just a few weeks, and things fall back to how they did before the ball dropped on the previous year.