BuzzFeed's 4-Week Get Fit Challenge makes it easier than ever to get into fitness, with simple exercise routines that you can do even without needing a gym membership. You'll work your whole body in just four weeks, and we'll send you reminders every few days with specific routines to complete, extra tips, and words of motivation! So no more excuses — because with BuzzFeed's 4-Week Get Fit Challenge, keeping your fitness resolution is easier than ever!