If you’re looking to slim down for summer, keep taking those selfies in front of the mirror! Research published in Peer J  found that subjects who noticed their waistlines were shrinking were more likely to stick with a weight-loss routine. “On the first day of your program, measure your waist, hips, and weight and take front and side photos,” suggests Isaac Kuzmar, M.D., of the University of Alicante in Spain. Then do a weekly check-in. Even if the scale doesn’t shift much, you’ll see your appearance change—which may be all the encouragement you need to keep up the good work! 

SEE ALSO: 3 Workouts for a Better Bikini Butt

Topics: